97977607 has 40 divisors (see below), whose sum is σ = 127680784. Its totient is φ = 74680704.

The previous prime is 97977589. The next prime is 97977641. The reversal of 97977607 is 70677979.

It is not a de Polignac number, because 97977607 - 2¹⁵ = 97944839 is a prime.

It is a super-2 number, since 2×97977607² = 19199222946892898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97977007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1342123 + ... + 1342195.

Almost surely, 2^97977607 is an apocalyptic number.

97977607 is a deficient number, since it is larger than the sum of its proper divisors (29703177).

97977607 is an equidigital number, since it uses as much as digits as its factorization.

97977607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 1166886, while the sum is 52.

The square root of 97977607 is about 9898.3638546984. The cubic root of 97977607 is about 461.0085103744.

The spelling of 97977607 in words is "ninety-seven million, nine hundred seventy-seven thousand, six hundred seven".