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68470407 = 3317149173
BaseRepresentation
bin1000001010011…
…00011010000111
311202211122202000
410011030122013
5120012023112
610443320343
71460663115
oct405143207
9152748660
1068470407
1135716915
121ab200b3
1311254545
149144ab5
1560277dc
hex414c687

68470407 has 16 divisors (see below), whose sum is σ = 107405280. Its totient is φ = 42961536.

The previous prime is 68470403. The next prime is 68470411. The reversal of 68470407 is 70407486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68470403) and next prime (68470411).

It is not a de Polignac number, because 68470407 - 22 = 68470403 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68470403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74128 + ... + 75045.

It is an arithmetic number, because the mean of its divisors is an integer number (6712830).

Almost surely, 268470407 is an apocalyptic number.

68470407 is a deficient number, since it is larger than the sum of its proper divisors (38934873).

68470407 is a wasteful number, since it uses less digits than its factorization.

68470407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149199 (or 149193 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 68470407 is about 8274.6847069843. The cubic root of 68470407 is about 409.1045438284.

The spelling of 68470407 in words is "sixty-eight million, four hundred seventy thousand, four hundred seven".

Divisors: 1 3 9 17 27 51 153 459 149173 447519 1342557 2535941 4027671 7607823 22823469 68470407