87406490 has 8 divisors (see below), whose sum is σ = 157331700. Its totient is φ = 34962592.

The previous prime is 87406489. The next prime is 87406513. The reversal of 87406490 is 9460478.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86471401 + 935089 = 9299^2 + 967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4370315 + ... + 4370334.

Almost surely, 2^87406490 is an apocalyptic number.

87406490 is a deficient number, since it is larger than the sum of its proper divisors (69925210).

87406490 is a wasteful number, since it uses less digits than its factorization.

87406490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740656.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 87406490 is about 9349.1438110663. The cubic root of 87406490 is about 443.7937961138.

The spelling of 87406490 in words is "eighty-seven million, four hundred six thousand, four hundred ninety".