90408610 has 8 divisors (see below), whose sum is σ = 162735516. Its totient is φ = 36163440.

The previous prime is 90408599. The next prime is 90408641. The reversal of 90408610 is 1680409.

It can be written as a sum of positive squares in 2 ways, for example, as 87965641 + 2442969 = 9379^2 + 1563^2 .

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, 4520421 + ... + 4520440.

Almost surely, 2^90408610 is an apocalyptic number.

90408610 is a deficient number, since it is larger than the sum of its proper divisors (72326906).

90408610 is a wasteful number, since it uses less digits than its factorization.

90408610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9040868.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 90408610 is about 9508.3442302012. The cubic root of 90408610 is about 448.8176533812.

The spelling of 90408610 in words is "ninety million, four hundred eight thousand, six hundred ten".