97619805 has 24 divisors (see below), whose sum is σ = 169437528. Its totient is φ = 51993216.

The previous prime is 97619791. The next prime is 97619849. The reversal of 97619805 is 50891679.

It can be written as a sum of positive squares in 4 ways, for example, as 54730404 + 42889401 = 7398^2 + 6549^2 .

It is not a de Polignac number, because 97619805 - 2⁵ = 97619773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64639 + ... + 66131.

It is an arithmetic number, because the mean of its divisors is an integer number (7059897).

Almost surely, 2^97619805 is an apocalyptic number.

It is an amenable number.

97619805 is a deficient number, since it is larger than the sum of its proper divisors (71817723).

97619805 is a wasteful number, since it uses less digits than its factorization.

97619805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957 (or 2954 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 97619805 is about 9880.2735286023. The cubic root of 97619805 is about 460.4466440036.

The spelling of 97619805 in words is "ninety-seven million, six hundred nineteen thousand, eight hundred five".