90205701 has 16 divisors (see below), whose sum is σ = 128426496. Its totient is φ = 56182896.

The previous prime is 90205697. The next prime is 90205721. The reversal of 90205701 is 10750209.

It is not a de Polignac number, because 90205701 - 2² = 90205697 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90205721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12235 + ... + 18168.

It is an arithmetic number, because the mean of its divisors is an integer number (8026656).

Almost surely, 2^90205701 is an apocalyptic number.

It is an amenable number.

90205701 is a deficient number, since it is larger than the sum of its proper divisors (38220795).

90205701 is a wasteful number, since it uses less digits than its factorization.

90205701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30472.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 90205701 is about 9497.6681875079. The cubic root of 90205701 is about 448.4816331843.

The spelling of 90205701 in words is "ninety million, two hundred five thousand, seven hundred one".