672673633 has 2 divisors, whose sum is σ = 672673634. Its totient is φ = 672673632.

The previous prime is 672673613. The next prime is 672673643. The reversal of 672673633 is 336376276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642774609 + 29899024 = 25353^2 + 5468^2 .

It is a cyclic number.

It is not a de Polignac number, because 672673633 - 2²⁹ = 135802721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672673633.

It is not a weakly prime, because it can be changed into another prime (672673613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336336816 + 336336817.

It is an arithmetic number, because the mean of its divisors is an integer number (336336817).

Almost surely, 2^672673633 is an apocalyptic number.

It is an amenable number.

672673633 is a deficient number, since it is larger than the sum of its proper divisors (1).

672673633 is an equidigital number, since it uses as much as digits as its factorization.

672673633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 43.

The square root of 672673633 is about 25935.9525176925. The cubic root of 672673633 is about 876.1964076779.

The spelling of 672673633 in words is "six hundred seventy-two million, six hundred seventy-three thousand, six hundred thirty-three".