68636698 has 8 divisors (see below), whose sum is σ = 110874708. Its totient is φ = 31678464.

The previous prime is 68636681. The next prime is 68636699. The reversal of 68636698 is 89663686.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63632529 + 5004169 = 7977^2 + 2237^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68636699) 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, 1319911 + ... + 1319962.

Almost surely, 2^68636698 is an apocalyptic number.

68636698 is a deficient number, since it is larger than the sum of its proper divisors (42238010).

68636698 is a wasteful number, since it uses less digits than its factorization.

68636698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639888.

The product of its digits is 2239488, while the sum is 52.

The square root of 68636698 is about 8284.7267909087. The cubic root of 68636698 is about 409.4354673457.

The spelling of 68636698 in words is "sixty-eight million, six hundred thirty-six thousand, six hundred ninety-eight".