672133993 has 2 divisors, whose sum is σ = 672133994. Its totient is φ = 672133992.

The previous prime is 672133961. The next prime is 672133997. The reversal of 672133993 is 399331276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 536015104 + 136118889 = 23152^2 + 11667^2 .

It is a cyclic number.

It is not a de Polignac number, because 672133993 - 2⁵ = 672133961 is a prime.

It is a super-2 number, since 2×672133993² = 903528209092248098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (672133997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336066996 + 336066997.

It is an arithmetic number, because the mean of its divisors is an integer number (336066997).

Almost surely, 2^672133993 is an apocalyptic number.

It is an amenable number.

672133993 is a deficient number, since it is larger than the sum of its proper divisors (1).

672133993 is an equidigital number, since it uses as much as digits as its factorization.

672133993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 43.

The square root of 672133993 is about 25925.5471109097. The cubic root of 672133993 is about 875.9620408654.

The spelling of 672133993 in words is "six hundred seventy-two million, one hundred thirty-three thousand, nine hundred ninety-three".