87690837 has 16 divisors (see below), whose sum is σ = 126314048. Its totient is φ = 53792640.

The previous prime is 87690817. The next prime is 87690839. The reversal of 87690837 is 73809678.

It is not a de Polignac number, because 87690837 - 2¹⁰ = 87689813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87690839) 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 15 ways as a sum of consecutive naturals, for example, 9513 + ... + 16305.

It is an arithmetic number, because the mean of its divisors is an integer number (7894628).

Almost surely, 2^87690837 is an apocalyptic number.

It is an amenable number.

87690837 is a deficient number, since it is larger than the sum of its proper divisors (38623211).

87690837 is a wasteful number, since it uses less digits than its factorization.

87690837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140.

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

The square root of 87690837 is about 9364.3385778174. The cubic root of 87690837 is about 444.2745187739.

The spelling of 87690837 in words is "eighty-seven million, six hundred ninety thousand, eight hundred thirty-seven".