90481765 has 8 divisors (see below), whose sum is σ = 118448928. Its totient is φ = 65804880.

The previous prime is 90481679. The next prime is 90481771. The reversal of 90481765 is 56718409.

90481765 is nontrivially palindromic in base 16.

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

It is not a de Polignac number, because 90481765 - 2⁹ = 90481253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822507 + ... + 822616.

It is an arithmetic number, because the mean of its divisors is an integer number (14806116).

Almost surely, 2^90481765 is an apocalyptic number.

It is an amenable number.

90481765 is a deficient number, since it is larger than the sum of its proper divisors (27967163).

90481765 is a wasteful number, since it uses less digits than its factorization.

90481765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645139.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 90481765 is about 9512.1903366154. The cubic root of 90481765 is about 448.9386757913.

The spelling of 90481765 in words is "ninety million, four hundred eighty-one thousand, seven hundred sixty-five".