90642648 has 32 divisors (see below), whose sum is σ = 226882800. Its totient is φ = 30177408.

The previous prime is 90642641. The next prime is 90642653. The reversal of 90642648 is 84624609.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90642641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23890 + ... + 27422.

Almost surely, 2^90642648 is an apocalyptic number.

It is an amenable number.

90642648 is an abundant number, since it is smaller than the sum of its proper divisors (136240152).

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

90642648 is a wasteful number, since it uses less digits than its factorization.

90642648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611 (or 4607 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 90642648 is about 9520.6432555789. The cubic root of 90642648 is about 449.2045998524.

The spelling of 90642648 in words is "ninety million, six hundred forty-two thousand, six hundred forty-eight".