90765602 has 4 divisors (see below), whose sum is σ = 136148406. Its totient is φ = 45382800.

The previous prime is 90765593. The next prime is 90765617. The reversal of 90765602 is 20656709.

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

It can be written as a sum of positive squares in only one way, i.e., 72267001 + 18498601 = 8501^2 + 4301^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22691399 + ... + 22691402.

Almost surely, 2^90765602 is an apocalyptic number.

90765602 is a deficient number, since it is larger than the sum of its proper divisors (45382804).

90765602 is a wasteful number, since it uses less digits than its factorization.

90765602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45382803.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 90765602 is about 9527.0982990625. The cubic root of 90765602 is about 449.4076188841.

The spelling of 90765602 in words is "ninety million, seven hundred sixty-five thousand, six hundred two".