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68627437 = 311220667
BaseRepresentation
bin1000001011100…
…10101111101101
311210010122010221
410011302233231
5120032034222
610450531341
71462215664
oct405625755
9153118127
1068627437
113581389a
121ab96b51
13112aab68
149185ddb
1560590c7
hex4172bed

68627437 has 4 divisors (see below), whose sum is σ = 68848416. Its totient is φ = 68406460.

The previous prime is 68627431. The next prime is 68627477. The reversal of 68627437 is 73472686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68627437 - 219 = 68103149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68627393 and 68627402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68627431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110023 + ... + 110644.

It is an arithmetic number, because the mean of its divisors is an integer number (17212104).

Almost surely, 268627437 is an apocalyptic number.

It is an amenable number.

68627437 is a deficient number, since it is larger than the sum of its proper divisors (220979).

68627437 is a wasteful number, since it uses less digits than its factorization.

68627437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220978.

The product of its digits is 338688, while the sum is 43.

The square root of 68627437 is about 8284.1678519933. The cubic root of 68627437 is about 409.4170517725.

The spelling of 68627437 in words is "sixty-eight million, six hundred twenty-seven thousand, four hundred thirty-seven".

Divisors: 1 311 220667 68627437