97685720 has 48 divisors (see below), whose sum is σ = 241602480. Its totient is φ = 35520320.

The previous prime is 97685711. The next prime is 97685729. The reversal of 97685720 is 2758679.

It is an interprime number because it is at equal distance from previous prime (97685711) and next prime (97685729).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97685729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5252 + ... + 14931.

It is an arithmetic number, because the mean of its divisors is an integer number (5033385).

Almost surely, 2^97685720 is an apocalyptic number.

It is an amenable number.

97685720 is an abundant number, since it is smaller than the sum of its proper divisors (143916760).

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

97685720 is a wasteful number, since it uses less digits than its factorization.

97685720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20216 (or 20201 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 97685720 is about 9883.6086527138. The cubic root of 97685720 is about 460.5502551921.

The spelling of 97685720 in words is "ninety-seven million, six hundred eighty-five thousand, seven hundred twenty".