90788461 has 4 divisors (see below), whose sum is σ = 90823932. Its totient is φ = 90752992.

The previous prime is 90788419. The next prime is 90788513. The reversal of 90788461 is 16488709.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6791236 + 83997225 = 2606^2 + 9165^2 .

It is a cyclic number.

It is not a de Polignac number, because 90788461 - 2¹¹ = 90786413 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 (90788261) 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, 13570 + ... + 19123.

It is an arithmetic number, because the mean of its divisors is an integer number (22705983).

Almost surely, 2^90788461 is an apocalyptic number.

It is an amenable number.

90788461 is a deficient number, since it is larger than the sum of its proper divisors (35471).

90788461 is a wasteful number, since it uses less digits than its factorization.

90788461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35470.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 90788461 is about 9528.2979067617. The cubic root of 90788461 is about 449.4453429640.

The spelling of 90788461 in words is "ninety million, seven hundred eighty-eight thousand, four hundred sixty-one".