97755779 has 24 divisors (see below), whose sum is σ = 114497040. Its totient is φ = 83160000.

The previous prime is 97755769. The next prime is 97755787.

97755779 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-97755779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97755719) 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 23 ways as a sum of consecutive naturals, for example, 231989 + ... + 232409.

It is an arithmetic number, because the mean of its divisors is an integer number (4770710).

Almost surely, 2^97755779 is an apocalyptic number.

97755779 is a deficient number, since it is larger than the sum of its proper divisors (16741261).

97755779 is a wasteful number, since it uses less digits than its factorization.

97755779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 552 counting only the distinct ones).

The product of its digits is 4862025, while the sum is 56.

The square root of 97755779 is about 9887.1522189152. The cubic root of 97755779 is about 460.6603292127.

The spelling of 97755779 in words is "ninety-seven million, seven hundred fifty-five thousand, seven hundred seventy-nine".