97065640 has 64 divisors (see below), whose sum is σ = 253733760. Its totient is φ = 32728320.

The previous prime is 97065613. The next prime is 97065653. The reversal of 97065640 is 4656079.

It is a self number, because there is not a number n which added to its sum of digits gives 97065640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14239 + ... + 19921.

It is an arithmetic number, because the mean of its divisors is an integer number (3964590).

Almost surely, 2^97065640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97065640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126866880).

97065640 is an abundant number, since it is smaller than the sum of its proper divisors (156668120).

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

97065640 is a wasteful number, since it uses less digits than its factorization.

97065640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5762 (or 5758 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 97065640 is about 9852.1896043468. The cubic root of 97065640 is about 459.5737071458.

The spelling of 97065640 in words is "ninety-seven million, sixty-five thousand, six hundred forty".