672666793 has 2 divisors, whose sum is σ = 672666794. Its totient is φ = 672666792.

The previous prime is 672666781. The next prime is 672666811. The reversal of 672666793 is 397666276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536524569 + 136142224 = 23163^2 + 11668^2 .

It is a cyclic number.

It is not a de Polignac number, because 672666793 - 2²⁵ = 639112361 is a prime.

It is a super-2 number, since 2×672666793² = 904961228809809698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 672666793.

It is not a weakly prime, because it can be changed into another prime (672666713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336333396 + 336333397.

It is an arithmetic number, because the mean of its divisors is an integer number (336333397).

Almost surely, 2^672666793 is an apocalyptic number.

It is an amenable number.

672666793 is a deficient number, since it is larger than the sum of its proper divisors (1).

672666793 is an equidigital number, since it uses as much as digits as its factorization.

672666793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 52.

The square root of 672666793 is about 25935.8206540684. The cubic root of 672666793 is about 876.1934378357.

The spelling of 672666793 in words is "six hundred seventy-two million, six hundred sixty-six thousand, seven hundred ninety-three".