672021933 has 32 divisors (see below), whose sum is σ = 1014792192. Its totient is φ = 392030400.

The previous prime is 672021929. The next prime is 672021943. The reversal of 672021933 is 339120276.

It is a happy number.

672021933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 672021933 - 2² = 672021929 is a prime.

It is a super-2 number, since 2×672021933² = 903226956866112978, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 672021894 and 672021903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672021943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91060 + ... + 98162.

It is an arithmetic number, because the mean of its divisors is an integer number (31712256).

Almost surely, 2^672021933 is an apocalyptic number.

It is an amenable number.

672021933 is a deficient number, since it is larger than the sum of its proper divisors (342770259).

672021933 is a wasteful number, since it uses less digits than its factorization.

672021933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 672021933 is about 25923.3858321015. The cubic root of 672021933 is about 875.9133572383.

The spelling of 672021933 in words is "six hundred seventy-two million, twenty-one thousand, nine hundred thirty-three".