68637361 has 8 divisors (see below), whose sum is σ = 74295144. Its totient is φ = 63033600.

The previous prime is 68637337. The next prime is 68637407. The reversal of 68637361 is 16373686.

It can be written as a sum of positive squares in 4 ways, for example, as 11861136 + 56776225 = 3444^2 + 7535^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68637361 - 2¹¹ = 68635313 is a prime.

It is a super-2 number, since 2×68637361² = 9422174650088642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68637161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10840 + ... + 15961.

It is an arithmetic number, because the mean of its divisors is an integer number (9286893).

Almost surely, 2^68637361 is an apocalyptic number.

It is an amenable number.

68637361 is a deficient number, since it is larger than the sum of its proper divisors (5657783).

68637361 is a wasteful number, since it uses less digits than its factorization.

68637361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27011.

The product of its digits is 108864, while the sum is 40.

The square root of 68637361 is about 8284.7668042016. The cubic root of 68637361 is about 409.4367856631.

The spelling of 68637361 in words is "sixty-eight million, six hundred thirty-seven thousand, three hundred sixty-one".