97810965 has 24 divisors (see below), whose sum is σ = 193759488. Its totient is φ = 44713440.

The previous prime is 97810961. The next prime is 97810981. The reversal of 97810965 is 56901879.

It is not a de Polignac number, because 97810965 - 2² = 97810961 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 97810965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97810961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154941 + ... + 155570.

It is an arithmetic number, because the mean of its divisors is an integer number (8073312).

Almost surely, 2^97810965 is an apocalyptic number.

It is an amenable number.

97810965 is a deficient number, since it is larger than the sum of its proper divisors (95948523).

97810965 is a wasteful number, since it uses less digits than its factorization.

97810965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310529 (or 310526 counting only the distinct ones).

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

The square root of 97810965 is about 9889.9426186404. The cubic root of 97810965 is about 460.7469983211.

The spelling of 97810965 in words is "ninety-seven million, eight hundred ten thousand, nine hundred sixty-five".