90065757 has 16 divisors (see below), whose sum is σ = 130488320. Its totient is φ = 55047600.

The previous prime is 90065753. The next prime is 90065777. The reversal of 90065757 is 75756009.

It is not a de Polignac number, because 90065757 - 2² = 90065753 is a prime.

It is a super-2 number, since 2×90065757² = 16223681167966098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90065753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23719 + ... + 27252.

It is an arithmetic number, because the mean of its divisors is an integer number (8155520).

Almost surely, 2^90065757 is an apocalyptic number.

It is an amenable number.

90065757 is a deficient number, since it is larger than the sum of its proper divisors (40422563).

90065757 is a wasteful number, since it uses less digits than its factorization.

90065757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51024.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 90065757 is about 9490.2980458993. The cubic root of 90065757 is about 448.2495902085.

The spelling of 90065757 in words is "ninety million, sixty-five thousand, seven hundred fifty-seven".