90634973 has 32 divisors (see below), whose sum is σ = 117718272. Its totient is φ = 68428800.

The previous prime is 90634963. The next prime is 90634981. The reversal of 90634973 is 37943609.

It is not a de Polignac number, because 90634973 - 2⁶ = 90634909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90634973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90634933) 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, 55103 + ... + 56723.

It is an arithmetic number, because the mean of its divisors is an integer number (3678696).

Almost surely, 2^90634973 is an apocalyptic number.

It is an amenable number.

90634973 is a deficient number, since it is larger than the sum of its proper divisors (27083299).

90634973 is a wasteful number, since it uses less digits than its factorization.

90634973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 90634973 is about 9520.2401755418. The cubic root of 90634973 is about 449.1919209693.

The spelling of 90634973 in words is "ninety million, six hundred thirty-four thousand, nine hundred seventy-three".