672732569 has 2 divisors, whose sum is σ = 672732570. Its totient is φ = 672732568.

The previous prime is 672732509. The next prime is 672732587. The reversal of 672732569 is 965237276.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670188544 + 2544025 = 25888^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 672732569 - 2¹² = 672728473 is a prime.

It is a super-2 number, since 2×672732569² = 905138218786679522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672732509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336366284 + 336366285.

It is an arithmetic number, because the mean of its divisors is an integer number (336366285).

Almost surely, 2^672732569 is an apocalyptic number.

It is an amenable number.

672732569 is a deficient number, since it is larger than the sum of its proper divisors (1).

672732569 is an equidigital number, since it uses as much as digits as its factorization.

672732569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 47.

The square root of 672732569 is about 25937.0886762566. The cubic root of 672732569 is about 876.2219961163.

The spelling of 672732569 in words is "six hundred seventy-two million, seven hundred thirty-two thousand, five hundred sixty-nine".