87137406 has 48 divisors (see below), whose sum is σ = 193667760. Its totient is φ = 28304640.

The previous prime is 87137387. The next prime is 87137417. The reversal of 87137406 is 60473178.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229725 + ... + 230103.

It is an arithmetic number, because the mean of its divisors is an integer number (4034745).

Almost surely, 2^87137406 is an apocalyptic number.

87137406 is an abundant number, since it is smaller than the sum of its proper divisors (106530354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87137406 is a wasteful number, since it uses less digits than its factorization.

87137406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 87137406 is about 9334.7418818091. The cubic root of 87137406 is about 443.3379162974.

The spelling of 87137406 in words is "eighty-seven million, one hundred thirty-seven thousand, four hundred six".