97320860 has 72 divisors (see below), whose sum is σ = 256062240. Its totient is φ = 30796416.

The previous prime is 97320833. The next prime is 97320863. The reversal of 97320860 is 6802379.

It is a super-2 number, since 2×97320860² = 18942699582279200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 97320860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97320863) 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, 8921 + ... + 16559.

It is an arithmetic number, because the mean of its divisors is an integer number (3556420).

Almost surely, 2^97320860 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 97320860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128031120).

97320860 is an abundant number, since it is smaller than the sum of its proper divisors (158741380).

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

97320860 is a wasteful number, since it uses less digits than its factorization.

97320860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7675 (or 7666 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 97320860 is about 9865.1335520610. The cubic root of 97320860 is about 459.9761487318.

The spelling of 97320860 in words is "ninety-seven million, three hundred twenty thousand, eight hundred sixty".