97716840 has 64 divisors (see below), whose sum is σ = 315705600. Its totient is φ = 24052992.

The previous prime is 97716779. The next prime is 97716841. The reversal of 97716840 is 4861779.

It is a junction number, because it is equal to n+sod(n) for n = 97716792 and 97716801.

It is not an unprimeable number, because it can be changed into a prime (97716841) 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, 29760 + ... + 32879.

It is an arithmetic number, because the mean of its divisors is an integer number (4932900).

Almost surely, 2^97716840 is an apocalyptic number.

It is an amenable number.

97716840 is an abundant number, since it is smaller than the sum of its proper divisors (217988760).

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

97716840 is a wasteful number, since it uses less digits than its factorization.

97716840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62666 (or 62662 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 97716840 is about 9885.1828511161. The cubic root of 97716840 is about 460.5991562401.

The spelling of 97716840 in words is "ninety-seven million, seven hundred sixteen thousand, eight hundred forty".