672969277 has 2 divisors, whose sum is σ = 672969278. Its totient is φ = 672969276.

The previous prime is 672969257. The next prime is 672969287. The reversal of 672969277 is 772969276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672157476 + 811801 = 25926^2 + 901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672969277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672969217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336484638 + 336484639.

It is an arithmetic number, because the mean of its divisors is an integer number (336484639).

Almost surely, 2^672969277 is an apocalyptic number.

It is an amenable number.

672969277 is a deficient number, since it is larger than the sum of its proper divisors (1).

672969277 is an equidigital number, since it uses as much as digits as its factorization.

672969277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 55.

The square root of 672969277 is about 25941.6513930783. The cubic root of 672969277 is about 876.3247533605.

Subtracting 672969277 from its reverse (772969276), we obtain a palindrome (99999999).

The spelling of 672969277 in words is "six hundred seventy-two million, nine hundred sixty-nine thousand, two hundred seventy-seven".