97777982 has 8 divisors (see below), whose sum is σ = 155294496. Its totient is φ = 46013152.

The previous prime is 97777961. The next prime is 97777987. The reversal of 97777982 is 28977779.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97777987) 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, 1437878 + ... + 1437945.

It is an arithmetic number, because the mean of its divisors is an integer number (19411812).

Almost surely, 2^97777982 is an apocalyptic number.

97777982 is a deficient number, since it is larger than the sum of its proper divisors (57516514).

97777982 is a wasteful number, since it uses less digits than its factorization.

97777982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875842.

The product of its digits is 3111696, while the sum is 56.

The square root of 97777982 is about 9888.2749759501. The cubic root of 97777982 is about 460.6952027419.

The spelling of 97777982 in words is "ninety-seven million, seven hundred seventy-seven thousand, nine hundred eighty-two".