90653518 has 4 divisors (see below), whose sum is σ = 135980280. Its totient is φ = 45326758.

The previous prime is 90653477. The next prime is 90653533. The reversal of 90653518 is 81535609.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22663378 + ... + 22663381.

It is an arithmetic number, because the mean of its divisors is an integer number (33995070).

Almost surely, 2^90653518 is an apocalyptic number.

90653518 is a deficient number, since it is larger than the sum of its proper divisors (45326762).

90653518 is a wasteful number, since it uses less digits than its factorization.

90653518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45326761.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 90653518 is about 9521.2141032538. The cubic root of 90653518 is about 449.2225555607. Note that the first 3 decimals are identical.

The spelling of 90653518 in words is "ninety million, six hundred fifty-three thousand, five hundred eighteen".