87213475 has 12 divisors (see below), whose sum is σ = 108352440. Its totient is φ = 69636800.

The previous prime is 87213457. The next prime is 87213479. The reversal of 87213475 is 57431278.

It is not a de Polignac number, because 87213475 - 2⁵ = 87213443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87213479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11160 + ... + 17290.

It is an arithmetic number, because the mean of its divisors is an integer number (9029370).

Almost surely, 2^87213475 is an apocalyptic number.

87213475 is a deficient number, since it is larger than the sum of its proper divisors (21138965).

87213475 is a wasteful number, since it uses less digits than its factorization.

87213475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710 (or 6705 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 87213475 is about 9338.8155030496. The cubic root of 87213475 is about 443.4668867925.

The spelling of 87213475 in words is "eighty-seven million, two hundred thirteen thousand, four hundred seventy-five".