90108077 has 4 divisors (see below), whose sum is σ = 90186720. Its totient is φ = 90029436.

The previous prime is 90108047. The next prime is 90108079. The reversal of 90108077 is 77080109.

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 90108077 - 2⁸ = 90107821 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 (90108079) 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, 37577 + ... + 39902.

It is an arithmetic number, because the mean of its divisors is an integer number (22546680).

Almost surely, 2^90108077 is an apocalyptic number.

It is an amenable number.

90108077 is a deficient number, since it is larger than the sum of its proper divisors (78643).

90108077 is a wasteful number, since it uses less digits than its factorization.

90108077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78642.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 90108077 is about 9492.5274295100. The cubic root of 90108077 is about 448.3197868917.

The spelling of 90108077 in words is "ninety million, one hundred eight thousand, seventy-seven".