87408475 has 48 divisors (see below), whose sum is σ = 143133696. Its totient is φ = 51264000.

The previous prime is 87408469. The next prime is 87408479. The reversal of 87408475 is 57480478.

It is not a de Polignac number, because 87408475 - 2¹³ = 87400283 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87408479) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31390 + ... + 34060.

It is an arithmetic number, because the mean of its divisors is an integer number (2981952).

Almost surely, 2^87408475 is an apocalyptic number.

87408475 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87408475 is the 4675-th decagonal number.

87408475 is a deficient number, since it is larger than the sum of its proper divisors (55725221).

87408475 is a wasteful number, since it uses less digits than its factorization.

87408475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 87408475 is about 9349.2499699174. The cubic root of 87408475 is about 443.7971556051.

The spelling of 87408475 in words is "eighty-seven million, four hundred eight thousand, four hundred seventy-five".