90262689 has 16 divisors (see below), whose sum is σ = 134495424. Its totient is φ = 53369600.

The previous prime is 90262687. The next prime is 90262693. The reversal of 90262689 is 98626209.

It is a cyclic number.

It is not a de Polignac number, because 90262689 - 2¹ = 90262687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90262689.

It is not an unprimeable number, because it can be changed into a prime (90262687) 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 15 ways as a sum of consecutive naturals, for example, 32004 + ... + 34709.

It is an arithmetic number, because the mean of its divisors is an integer number (8405964).

Almost surely, 2^90262689 is an apocalyptic number.

It is an amenable number.

90262689 is a deficient number, since it is larger than the sum of its proper divisors (44232735).

90262689 is a wasteful number, since it uses less digits than its factorization.

90262689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66768.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 90262689 is about 9500.6678186325. The cubic root of 90262689 is about 448.5760569689.

It can be divided in two parts, 90262 and 689, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 90262689 in words is "ninety million, two hundred sixty-two thousand, six hundred eighty-nine".