90745630 has 16 divisors (see below), whose sum is σ = 164870640. Its totient is φ = 35958592.

The previous prime is 90745607. The next prime is 90745631. The reversal of 90745630 is 3654709.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90745631) 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, 41335 + ... + 43474.

It is an arithmetic number, because the mean of its divisors is an integer number (10304415).

Almost surely, 2^90745630 is an apocalyptic number.

90745630 is a deficient number, since it is larger than the sum of its proper divisors (74125010).

90745630 is a wasteful number, since it uses less digits than its factorization.

90745630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84923.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 90745630 is about 9526.0500733515. The cubic root of 90745630 is about 449.3746540194.

The spelling of 90745630 in words is "ninety million, seven hundred forty-five thousand, six hundred thirty".