906221604 has 24 divisors (see below), whose sum is σ = 2135049280. Its totient is φ = 299140704.

The previous prime is 906221573. The next prime is 906221623. The reversal of 906221604 is 406122609.

It is a super-3 number, since 3×906221604³ (a number of 28 digits) contains 333 as substring.

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, 365359 + ... + 367830.

Almost surely, 2^906221604 is an apocalyptic number.

It is an amenable number.

906221604 is an abundant number, since it is smaller than the sum of its proper divisors (1228827676).

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

906221604 is a wasteful number, since it uses less digits than its factorization.

906221604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733299 (or 733297 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 906221604 is about 30103.5148113970. The cubic root of 906221604 is about 967.7090527031.

The spelling of 906221604 in words is "nine hundred six million, two hundred twenty-one thousand, six hundred four".