68772916 has 6 divisors (see below), whose sum is σ = 120352610. Its totient is φ = 34386456.

The previous prime is 68772901. The next prime is 68772923. The reversal of 68772916 is 61927786.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64064016 + 4708900 = 8004^2 + 2170^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8596611 + ... + 8596618.

Almost surely, 2^68772916 is an apocalyptic number.

It is an amenable number.

68772916 is a deficient number, since it is larger than the sum of its proper divisors (51579694).

68772916 is a wasteful number, since it uses less digits than its factorization.

68772916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17193233 (or 17193231 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 68772916 is about 8292.9437475483. The cubic root of 68772916 is about 409.7061467682.

The spelling of 68772916 in words is "sixty-eight million, seven hundred seventy-two thousand, nine hundred sixteen".