90887906 has 16 divisors (see below), whose sum is σ = 144830400. Its totient is φ = 42655248.

The previous prime is 90887893. The next prime is 90887911. The reversal of 90887906 is 60978809.

It is a super-2 number, since 2×90887906² = 16521222914129672, which contains 22 as substring.

It is a Curzon 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, 6830 + ... + 15113.

It is an arithmetic number, because the mean of its divisors is an integer number (9051900).

Almost surely, 2^90887906 is an apocalyptic number.

90887906 is a deficient number, since it is larger than the sum of its proper divisors (53942494).

90887906 is a wasteful number, since it uses less digits than its factorization.

90887906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22073.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 90887906 is about 9533.5148817212. The cubic root of 90887906 is about 449.6093828382.

The spelling of 90887906 in words is "ninety million, eight hundred eighty-seven thousand, nine hundred six".