87940806 has 16 divisors (see below), whose sum is σ = 176144448. Its totient is φ = 29269800.

The previous prime is 87940763. The next prime is 87940819. The reversal of 87940806 is 60804978.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6460 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (11009028).

Almost surely, 2^87940806 is an apocalyptic number.

87940806 is an abundant number, since it is smaller than the sum of its proper divisors (88203642).

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

87940806 is a wasteful number, since it uses less digits than its factorization.

87940806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21907.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 87940806 is about 9377.6759380989. The cubic root of 87940806 is about 444.6962637152.

The spelling of 87940806 in words is "eighty-seven million, nine hundred forty thousand, eight hundred six".