87973497 has 6 divisors (see below), whose sum is σ = 127072842. Its totient is φ = 58648992.

The previous prime is 87973489. The next prime is 87973499. The reversal of 87973497 is 79437978.

87973497 is a `hidden beast` number, since 87 + 9 + 73 + 497 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86044176 + 1929321 = 9276^2 + 1389^2 .

It is not a de Polignac number, because 87973497 - 2³ = 87973489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87973499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4887408 + ... + 4887425.

It is an arithmetic number, because the mean of its divisors is an integer number (21178807).

Almost surely, 2^87973497 is an apocalyptic number.

It is an amenable number.

87973497 is a deficient number, since it is larger than the sum of its proper divisors (39099345).

87973497 is a wasteful number, since it uses less digits than its factorization.

87973497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9774839 (or 9774836 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 87973497 is about 9379.4187986250. The cubic root of 87973497 is about 444.7513604907.

The spelling of 87973497 in words is "eighty-seven million, nine hundred seventy-three thousand, four hundred ninety-seven".