672631911 has 32 divisors (see below), whose sum is σ = 1205844480. Its totient is φ = 361749888.

The previous prime is 672631907. The next prime is 672631913. The reversal of 672631911 is 119136276.

672631911 is a `hidden beast` number, since 6 + 7 + 2 + 631 + 9 + 11 = 666.

It is not a de Polignac number, because 672631911 - 2² = 672631907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672631913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101461 + ... + 107886.

It is an arithmetic number, because the mean of its divisors is an integer number (37682640).

Almost surely, 2^672631911 is an apocalyptic number.

672631911 is a deficient number, since it is larger than the sum of its proper divisors (533212569).

672631911 is a wasteful number, since it uses less digits than its factorization.

672631911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209380 (or 209374 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 672631911 is about 25935.1481777144. The cubic root of 672631911 is about 876.1782921954.

The spelling of 672631911 in words is "six hundred seventy-two million, six hundred thirty-one thousand, nine hundred eleven".