97872487 has 16 divisors (see below), whose sum is σ = 104239360. Its totient is φ = 91756800.

The previous prime is 97872479. The next prime is 97872493. The reversal of 97872487 is 78427879.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 97872487 - 2³ = 97872479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97872457) 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, 137689 + ... + 138397.

It is an arithmetic number, because the mean of its divisors is an integer number (6514960).

Almost surely, 2^97872487 is an apocalyptic number.

97872487 is a deficient number, since it is larger than the sum of its proper divisors (6366873).

97872487 is a wasteful number, since it uses less digits than its factorization.

97872487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its digits is 1580544, while the sum is 52.

The square root of 97872487 is about 9893.0524611972. The cubic root of 97872487 is about 460.8435796392.

The spelling of 97872487 in words is "ninety-seven million, eight hundred seventy-two thousand, four hundred eighty-seven".