87404997 has 16 divisors (see below), whose sum is σ = 122938560. Its totient is φ = 55084032.

The previous prime is 87404981. The next prime is 87405011. The reversal of 87404997 is 79940478.

It is a happy number.

It is not a de Polignac number, because 87404997 - 2⁴ = 87404981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87404957) 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, 30373 + ... + 33125.

It is an arithmetic number, because the mean of its divisors is an integer number (7683660).

Almost surely, 2^87404997 is an apocalyptic number.

It is an amenable number.

87404997 is a deficient number, since it is larger than the sum of its proper divisors (35533563).

87404997 is a wasteful number, since it uses less digits than its factorization.

87404997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 87404997 is about 9349.0639638415. The cubic root of 87404997 is about 443.7912692690.

The spelling of 87404997 in words is "eighty-seven million, four hundred four thousand, nine hundred ninety-seven".