97145685 has 72 divisors (see below), whose sum is σ = 211007160. Its totient is φ = 40981248.

The previous prime is 97145677. The next prime is 97145707. The reversal of 97145685 is 58654179.

It can be written as a sum of positive squares in 4 ways, for example, as 17114769 + 80030916 = 4137^2 + 8946^2 .

It is not a de Polignac number, because 97145685 - 2³ = 97145677 is a prime.

It is a super-2 number, since 2×97145685² = 18874568228238450, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 97145685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26971 + ... + 30359.

It is an arithmetic number, because the mean of its divisors is an integer number (2930655).

Almost surely, 2^97145685 is an apocalyptic number.

It is an amenable number.

97145685 is an abundant number, since it is smaller than the sum of its proper divisors (113861475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97145685 is a wasteful number, since it uses less digits than its factorization.

97145685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427 (or 3417 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 97145685 is about 9856.2510621433. The cubic root of 97145685 is about 459.7000013045.

It can be divided in two parts, 971 and 45685, that added together give a 6-th power (46656 = 6⁶).

The spelling of 97145685 in words is "ninety-seven million, one hundred forty-five thousand, six hundred eighty-five".