906675021 has 48 divisors (see below), whose sum is σ = 1538867200. Its totient is φ = 503721504.

The previous prime is 906675013. The next prime is 906675031. The reversal of 906675021 is 120576609.

906675021 is a `hidden beast` number, since 90 + 6 + 67 + 502 + 1 = 666.

It is not a de Polignac number, because 906675021 - 2³ = 906675013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906675031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332100 + ... + 334818.

Almost surely, 2^906675021 is an apocalyptic number.

It is an amenable number.

906675021 is a deficient number, since it is larger than the sum of its proper divisors (632192179).

906675021 is a wasteful number, since it uses less digits than its factorization.

906675021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 906675021 is about 30111.0448340804. The cubic root of 906675021 is about 967.8704196267.

The spelling of 906675021 in words is "nine hundred six million, six hundred seventy-five thousand, twenty-one".