972718877 has 6 divisors (see below), whose sum is σ = 1053299322. Its totient is φ = 897894192.

The previous prime is 972718853. The next prime is 972718883. The reversal of 972718877 is 778817279.

It can be written as a sum of positive squares in 3 ways, for example, as 123520996 + 849197881 = 11114^2 + 29141^2 .

It is not a de Polignac number, because 972718877 - 2²⁸ = 704283421 is a prime.

It is a super-2 number, since 2×972718877² = 1892364027344282258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972718177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2877698 + ... + 2878035.

It is an arithmetic number, because the mean of its divisors is an integer number (175549887).

Almost surely, 2^972718877 is an apocalyptic number.

It is an amenable number.

972718877 is a deficient number, since it is larger than the sum of its proper divisors (80580445).

972718877 is a wasteful number, since it uses less digits than its factorization.

972718877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5755759 (or 5755746 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 56.

The square root of 972718877 is about 31188.4414006215. The cubic root of 972718877 is about 990.8223202050.

The spelling of 972718877 in words is "nine hundred seventy-two million, seven hundred eighteen thousand, eight hundred seventy-seven".