672416761 has 3 divisors (see below), whose sum is σ = 672442693. Its totient is φ = 672390830.

The previous prime is 672416747. The next prime is 672416803. The reversal of 672416761 is 167614276.

The square root of 672416761 is 25931.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 672416761 - 2⁵ = 672416729 is a prime.

It is a super-2 number, since 2×672416761² = 904288600947462242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672416711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12966 + ... + 38896.

Almost surely, 2^672416761 is an apocalyptic number.

672416761 is the 25931-st square number.

672416761 is the 12966-th centered octagonal number.

It is an amenable number.

672416761 is a deficient number, since it is larger than the sum of its proper divisors (25932).

672416761 is an frugal number, since it uses more digits than its factorization.

672416761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51862 (or 25931 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The cubic root of 672416761 is about 876.0848632540.

The spelling of 672416761 in words is "six hundred seventy-two million, four hundred sixteen thousand, seven hundred sixty-one".