68771972 has 6 divisors (see below), whose sum is σ = 120350958. Its totient is φ = 34385984.

The previous prime is 68771971. The next prime is 68772013. The reversal of 68771972 is 27917786.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 19855936 = 6994^2 + 4456^2 .

It is not an unprimeable number, because it can be changed into a prime (68771971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8596493 + ... + 8596500.

It is an arithmetic number, because the mean of its divisors is an integer number (20058493).

Almost surely, 2^68771972 is an apocalyptic number.

It is an amenable number.

68771972 is a deficient number, since it is larger than the sum of its proper divisors (51578986).

68771972 is a wasteful number, since it uses less digits than its factorization.

68771972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17192997 (or 17192995 counting only the distinct ones).

The product of its digits is 296352, while the sum is 47.

The square root of 68771972 is about 8292.8868314960. The cubic root of 68771972 is about 409.7042721719.

The spelling of 68771972 in words is "sixty-eight million, seven hundred seventy-one thousand, nine hundred seventy-two".