90577757 has 4 divisors (see below), whose sum is σ = 90839136. Its totient is φ = 90316380.

The previous prime is 90577699. The next prime is 90577763. The reversal of 90577757 is 75777509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90577757 - 2¹⁶ = 90512221 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 (90577777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130169 + ... + 130862.

It is an arithmetic number, because the mean of its divisors is an integer number (22709784).

Almost surely, 2^90577757 is an apocalyptic number.

It is an amenable number.

90577757 is a deficient number, since it is larger than the sum of its proper divisors (261379).

90577757 is a wasteful number, since it uses less digits than its factorization.

90577757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261378.

The product of its (nonzero) digits is 540225, while the sum is 47.

The square root of 90577757 is about 9517.2347349427. The cubic root of 90577757 is about 449.0973791894.

The spelling of 90577757 in words is "ninety million, five hundred seventy-seven thousand, seven hundred fifty-seven".