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68995510 = 256899551
BaseRepresentation
bin1000001110011…
…00100110110110
311210211100001021
410013030212312
5120130324020
610502451354
71465311043
oct407144666
9153740037
1068995510
1135a45391
121b133b5a
13113a955c
1492401ca
1560cd1aa
hex41cc9b6

68995510 has 8 divisors (see below), whose sum is σ = 124191936. Its totient is φ = 27598200.

The previous prime is 68995501. The next prime is 68995513. The reversal of 68995510 is 1559986.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68995513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3449766 + ... + 3449785.

It is an arithmetic number, because the mean of its divisors is an integer number (15523992).

Almost surely, 268995510 is an apocalyptic number.

68995510 is a deficient number, since it is larger than the sum of its proper divisors (55196426).

68995510 is a wasteful number, since it uses less digits than its factorization.

68995510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899558.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 68995510 is about 8306.3535922810. The cubic root of 68995510 is about 410.1476961439.

The spelling of 68995510 in words is "sixty-eight million, nine hundred ninety-five thousand, five hundred ten".

Divisors: 1 2 5 10 6899551 13799102 34497755 68995510