68686522 has 8 divisors (see below), whose sum is σ = 103140756. Its totient is φ = 34306272.

The previous prime is 68686517. The next prime is 68686531. The reversal of 68686522 is 22568686.

It can be written as a sum of positive squares in 2 ways, for example, as 63664441 + 5022081 = 7979^2 + 2241^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16113 + ... + 19924.

Almost surely, 2^68686522 is an apocalyptic number.

68686522 is a deficient number, since it is larger than the sum of its proper divisors (34454234).

68686522 is a wasteful number, since it uses less digits than its factorization.

68686522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36992.

The product of its digits is 276480, while the sum is 43.

The square root of 68686522 is about 8287.7332244710. The cubic root of 68686522 is about 409.5345143531.

The spelling of 68686522 in words is "sixty-eight million, six hundred eighty-six thousand, five hundred twenty-two".