90975744 has 80 divisors (see below), whose sum is σ = 269335440. Its totient is φ = 30320640.

The previous prime is 90975737. The next prime is 90975751. The reversal of 90975744 is 44757909.

It is an interprime number because it is at equal distance from previous prime (90975737) and next prime (90975751).

It is a self number, because there is not a number n which added to its sum of digits gives 90975744.

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, 10534 + ... + 17114.

It is an arithmetic number, because the mean of its divisors is an integer number (3366693).

Almost surely, 2^90975744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90975744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134667720).

90975744 is an abundant number, since it is smaller than the sum of its proper divisors (178359696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90975744 is an equidigital number, since it uses as much as digits as its factorization.

90975744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6608 (or 6586 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 90975744 is about 9538.1205695881. The cubic root of 90975744 is about 449.7541768488.

It can be divided in two parts, 90975 and 744, that added together give a palindrome (91719).

The spelling of 90975744 in words is "ninety million, nine hundred seventy-five thousand, seven hundred forty-four".