87680406 has 16 divisors (see below), whose sum is σ = 191302848. Its totient is φ = 26569800.

The previous prime is 87680381. The next prime is 87680413. The reversal of 87680406 is 60408678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664180 + ... + 664311.

It is an arithmetic number, because the mean of its divisors is an integer number (11956428).

Almost surely, 2^87680406 is an apocalyptic number.

87680406 is an abundant number, since it is smaller than the sum of its proper divisors (103622442).

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

87680406 is a wasteful number, since it uses less digits than its factorization.

87680406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328507.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 87680406 is about 9363.7816078762. The cubic root of 87680406 is about 444.2569022953.

The spelling of 87680406 in words is "eighty-seven million, six hundred eighty thousand, four hundred six".