90475777 has 24 divisors (see below), whose sum is σ = 111249600. Its totient is φ = 71873568.

The previous prime is 90475769. The next prime is 90475787. The reversal of 90475777 is 77757409.

It is not a de Polignac number, because 90475777 - 2³ = 90475769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90475747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829999 + ... + 830107.

It is an arithmetic number, because the mean of its divisors is an integer number (4635400).

Almost surely, 2^90475777 is an apocalyptic number.

It is an amenable number.

90475777 is a deficient number, since it is larger than the sum of its proper divisors (20773823).

90475777 is a wasteful number, since it uses less digits than its factorization.

90475777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 432180, while the sum is 46.

The square root of 90475777 is about 9511.8755774032. The cubic root of 90475777 is about 448.9287721233.

The spelling of 90475777 in words is "ninety million, four hundred seventy-five thousand, seven hundred seventy-seven".