672135977 has 2 divisors, whose sum is σ = 672135978. Its totient is φ = 672135976.

The previous prime is 672135973. The next prime is 672136007. The reversal of 672135977 is 779531276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625950361 + 46185616 = 25019^2 + 6796^2 .

It is a cyclic number.

It is not a de Polignac number, because 672135977 - 2² = 672135973 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672135973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336067988 + 336067989.

It is an arithmetic number, because the mean of its divisors is an integer number (336067989).

Almost surely, 2^672135977 is an apocalyptic number.

It is an amenable number.

672135977 is a deficient number, since it is larger than the sum of its proper divisors (1).

672135977 is an equidigital number, since it uses as much as digits as its factorization.

672135977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 555660, while the sum is 47.

The square root of 672135977 is about 25925.5853742977. The cubic root of 672135977 is about 875.9629027506.

The spelling of 672135977 in words is "six hundred seventy-two million, one hundred thirty-five thousand, nine hundred seventy-seven".