90577061 has 4 divisors (see below), whose sum is σ = 90904332. Its totient is φ = 90249792.

The previous prime is 90577033. The next prime is 90577079. The reversal of 90577061 is 16077509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16077509 = 7 ⋅2296787.

It can be written as a sum of positive squares in 2 ways, for example, as 21104836 + 69472225 = 4594^2 + 8335^2 .

It is a cyclic number.

It is not a de Polignac number, because 90577061 - 2²⁶ = 23468197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90577021) 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, 163220 + ... + 163773.

It is an arithmetic number, because the mean of its divisors is an integer number (22726083).

Almost surely, 2^90577061 is an apocalyptic number.

It is an amenable number.

90577061 is a deficient number, since it is larger than the sum of its proper divisors (327271).

90577061 is a wasteful number, since it uses less digits than its factorization.

90577061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327270.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 90577061 is about 9517.1981696295. The cubic root of 90577061 is about 449.0962288975.

The spelling of 90577061 in words is "ninety million, five hundred seventy-seven thousand, sixty-one".