90622857 has 32 divisors (see below), whose sum is σ = 133436800. Its totient is φ = 54369792.

The previous prime is 90622841. The next prime is 90622859. The reversal of 90622857 is 75822609.

It is a happy number.

It is not a de Polignac number, because 90622857 - 2⁴ = 90622841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90622859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395619 + ... + 395847.

It is an arithmetic number, because the mean of its divisors is an integer number (4169900).

Almost surely, 2^90622857 is an apocalyptic number.

It is an amenable number.

90622857 is a deficient number, since it is larger than the sum of its proper divisors (42813943).

90622857 is a wasteful number, since it uses less digits than its factorization.

90622857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 90622857 is about 9519.6038257902. The cubic root of 90622857 is about 449.1719042228.

The spelling of 90622857 in words is "ninety million, six hundred twenty-two thousand, eight hundred fifty-seven".