90740745 has 12 divisors (see below), whose sum is σ = 157284036. Its totient is φ = 48395040.

The previous prime is 90740719. The next prime is 90740777. The reversal of 90740745 is 54704709.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61027344 + 29713401 = 7812^2 + 5451^2 .

It is not a de Polignac number, because 90740745 - 2⁹ = 90740233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1008186 + ... + 1008275.

It is an arithmetic number, because the mean of its divisors is an integer number (13107003).

Almost surely, 2^90740745 is an apocalyptic number.

It is an amenable number.

90740745 is a deficient number, since it is larger than the sum of its proper divisors (66543291).

90740745 is a wasteful number, since it uses less digits than its factorization.

90740745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016472 (or 2016469 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 90740745 is about 9525.7936677213. The cubic root of 90740745 is about 449.3665903269.

The spelling of 90740745 in words is "ninety million, seven hundred forty thousand, seven hundred forty-five".