672566899 has 2 divisors, whose sum is σ = 672566900. Its totient is φ = 672566898.

The previous prime is 672566891. The next prime is 672566933. The reversal of 672566899 is 998665276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672566899 - 2³ = 672566891 is a prime.

It is not a weakly prime, because it can be changed into another prime (672566891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336283449 + 336283450.

It is an arithmetic number, because the mean of its divisors is an integer number (336283450).

Almost surely, 2^672566899 is an apocalyptic number.

672566899 is a deficient number, since it is larger than the sum of its proper divisors (1).

672566899 is an equidigital number, since it uses as much as digits as its factorization.

672566899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 58.

The square root of 672566899 is about 25933.8947904089. The cubic root of 672566899 is about 876.1500628189.

The spelling of 672566899 in words is "six hundred seventy-two million, five hundred sixty-six thousand, eight hundred ninety-nine".