90786577 has 8 divisors (see below), whose sum is σ = 104784192. Its totient is φ = 77046000.

The previous prime is 90786557. The next prime is 90786583. The reversal of 90786577 is 77568709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90786577 - 2¹⁵ = 90753809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90786577.

It is not an unprimeable number, because it can be changed into a prime (90786547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63499 + ... + 64912.

It is an arithmetic number, because the mean of its divisors is an integer number (13098024).

Almost surely, 2^90786577 is an apocalyptic number.

It is an amenable number.

90786577 is a deficient number, since it is larger than the sum of its proper divisors (13997615).

90786577 is a wasteful number, since it uses less digits than its factorization.

90786577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128519.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 90786577 is about 9528.1990428412. The cubic root of 90786577 is about 449.4422340488.

The spelling of 90786577 in words is "ninety million, seven hundred eighty-six thousand, five hundred seventy-seven".