87204475 has 12 divisors (see below), whose sum is σ = 114494904. Its totient is φ = 65659520.

The previous prime is 87204461. The next prime is 87204487. The reversal of 87204475 is 57440278.

It is not a de Polignac number, because 87204475 - 2¹⁷ = 87073403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102169 + ... + 103018.

It is an arithmetic number, because the mean of its divisors is an integer number (9541242).

Almost surely, 2^87204475 is an apocalyptic number.

87204475 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87204475 is a deficient number, since it is larger than the sum of its proper divisors (27290429).

87204475 is a wasteful number, since it uses less digits than its factorization.

87204475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205214 (or 205209 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 87204475 is about 9338.3336307930. Note that the first 3 decimals coincide. The cubic root of 87204475 is about 443.4516317368.

The spelling of 87204475 in words is "eighty-seven million, two hundred four thousand, four hundred seventy-five".