901090657 has 4 divisors (see below), whose sum is σ = 916363440. Its totient is φ = 885817876.

The previous prime is 901090651. The next prime is 901090681. The reversal of 901090657 is 756090109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 901090657 - 2⁷ = 901090529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901090651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7636303 + ... + 7636420.

It is an arithmetic number, because the mean of its divisors is an integer number (229090860).

Almost surely, 2^901090657 is an apocalyptic number.

It is an amenable number.

901090657 is a deficient number, since it is larger than the sum of its proper divisors (15272783).

901090657 is a wasteful number, since it uses less digits than its factorization.

901090657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15272782.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 901090657 is about 30018.1721129052. The cubic root of 901090657 is about 965.8792337458.

The spelling of 901090657 in words is "nine hundred one million, ninety thousand, six hundred fifty-seven".