90623663 has 4 divisors (see below), whose sum is σ = 97594728. Its totient is φ = 83652600.

The previous prime is 90623639. The next prime is 90623683. The reversal of 90623663 is 36632609.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90623663 - 2¹⁰ = 90622639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90623683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3485513 + ... + 3485538.

It is an arithmetic number, because the mean of its divisors is an integer number (24398682).

Almost surely, 2^90623663 is an apocalyptic number.

90623663 is a deficient number, since it is larger than the sum of its proper divisors (6971065).

90623663 is a wasteful number, since it uses less digits than its factorization.

90623663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971064.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 90623663 is about 9519.6461593906. The cubic root of 90623663 is about 449.1732358643.

The spelling of 90623663 in words is "ninety million, six hundred twenty-three thousand, six hundred sixty-three".