97275640 has 64 divisors (see below), whose sum is σ = 272885760. Its totient is φ = 30318720.

The previous prime is 97275637. The next prime is 97275641. The reversal of 97275640 is 4657279.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 97275593 and 97275602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97275641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12712 + ... + 18871.

It is an arithmetic number, because the mean of its divisors is an integer number (4263840).

Almost surely, 2^97275640 is an apocalyptic number.

It is an amenable number.

97275640 is an abundant number, since it is smaller than the sum of its proper divisors (175610120).

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

97275640 is a wasteful number, since it uses less digits than its factorization.

97275640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31612 (or 31608 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 97275640 is about 9862.8413755875. The cubic root of 97275640 is about 459.9048952723.

The spelling of 97275640 in words is "ninety-seven million, two hundred seventy-five thousand, six hundred forty".