90442765 has 8 divisors (see below), whose sum is σ = 124035840. Its totient is φ = 62017872.

The previous prime is 90442753. The next prime is 90442777. The reversal of 90442765 is 56724409.

It is an interprime number because it is at equal distance from previous prime (90442753) and next prime (90442777).

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

It is not a de Polignac number, because 90442765 - 2⁵ = 90442733 is a prime.

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, 1292005 + ... + 1292074.

It is an arithmetic number, because the mean of its divisors is an integer number (15504480).

Almost surely, 2^90442765 is an apocalyptic number.

It is an amenable number.

90442765 is a deficient number, since it is larger than the sum of its proper divisors (33593075).

90442765 is a wasteful number, since it uses less digits than its factorization.

90442765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584091.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 90442765 is about 9510.1401146355. The cubic root of 90442765 is about 448.8741650968.

The spelling of 90442765 in words is "ninety million, four hundred forty-two thousand, seven hundred sixty-five".