90641624 has 16 divisors (see below), whose sum is σ = 170223120. Its totient is φ = 45248800.

The previous prime is 90641623. The next prime is 90641657. The reversal of 90641624 is 42614609.

It is a happy number.

It is a super-3 number, since 3×90641624³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90641623) 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 3 ways as a sum of consecutive naturals, for example, 3452 + ... + 13899.

It is an arithmetic number, because the mean of its divisors is an integer number (10638945).

Almost surely, 2^90641624 is an apocalyptic number.

It is an amenable number.

90641624 is a deficient number, since it is larger than the sum of its proper divisors (79581496).

90641624 is a wasteful number, since it uses less digits than its factorization.

90641624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18010 (or 18006 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 90641624 is about 9520.5894775481. The cubic root of 90641624 is about 449.2029082747.

The spelling of 90641624 in words is "ninety million, six hundred forty-one thousand, six hundred twenty-four".