87406436 has 12 divisors (see below), whose sum is σ = 164727612. Its totient is φ = 40341408.

The previous prime is 87406399. The next prime is 87406489. The reversal of 87406436 is 63460478.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15054400 + 72352036 = 3880^2 + 8506^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87406436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840395 + ... + 840498.

It is an arithmetic number, because the mean of its divisors is an integer number (13727301).

Almost surely, 2^87406436 is an apocalyptic number.

It is an amenable number.

87406436 is a deficient number, since it is larger than the sum of its proper divisors (77321176).

87406436 is a wasteful number, since it uses less digits than its factorization.

87406436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680910 (or 1680908 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 87406436 is about 9349.1409231009. The cubic root of 87406436 is about 443.7937047214.

The spelling of 87406436 in words is "eighty-seven million, four hundred six thousand, four hundred thirty-six".