90551699 has 8 divisors (see below), whose sum is σ = 103596288. Its totient is φ = 77534280.

The previous prime is 90551687. The next prime is 90551723. The reversal of 90551699 is 99615509.

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

It is a cyclic number.

It is not a de Polignac number, because 90551699 - 2²⁴ = 73774483 is a prime.

It is a super-2 number, since 2×90551699² = 16399220383573202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90551399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (12949536).

Almost surely, 2^90551699 is an apocalyptic number.

90551699 is a deficient number, since it is larger than the sum of its proper divisors (13044589).

90551699 is a wasteful number, since it uses less digits than its factorization.

90551699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13585.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 90551699 is about 9515.8656463824. The cubic root of 90551699 is about 449.0543086376.

The spelling of 90551699 in words is "ninety million, five hundred fifty-one thousand, six hundred ninety-nine".