90651642 has 16 divisors (see below), whose sum is σ = 182505792. Its totient is φ = 30016800.

The previous prime is 90651623. The next prime is 90651647. The reversal of 90651642 is 24615609.

It is not an unprimeable number, because it can be changed into a prime (90651647) 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, 49123 + ... + 50934.

It is an arithmetic number, because the mean of its divisors is an integer number (11406612).

Almost surely, 2^90651642 is an apocalyptic number.

90651642 is an abundant number, since it is smaller than the sum of its proper divisors (91854150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90651642 is a wasteful number, since it uses less digits than its factorization.

90651642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100213.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 90651642 is about 9521.1155858964. The cubic root of 90651642 is about 449.2194567755.

The spelling of 90651642 in words is "ninety million, six hundred fifty-one thousand, six hundred forty-two".