90458661 has 4 divisors (see below), whose sum is σ = 120611552. Its totient is φ = 60305772.

The previous prime is 90458633. The next prime is 90458663. The reversal of 90458661 is 16685409.

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 not a de Polignac number, because 90458661 - 2²⁵ = 56904229 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 (90458663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15076441 + ... + 15076446.

It is an arithmetic number, because the mean of its divisors is an integer number (30152888).

Almost surely, 2^90458661 is an apocalyptic number.

It is an amenable number.

90458661 is a deficient number, since it is larger than the sum of its proper divisors (30152891).

90458661 is a wasteful number, since it uses less digits than its factorization.

90458661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30152890.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 90458661 is about 9510.9758174438. The cubic root of 90458661 is about 448.9004612328.

It can be divided in two parts, 90458 and 661, that added together give a palindrome (91119).

The spelling of 90458661 in words is "ninety million, four hundred fifty-eight thousand, six hundred sixty-one".