672756947 has 4 divisors (see below), whose sum is σ = 694458816. Its totient is φ = 651055080.

The previous prime is 672756943. The next prime is 672756971. The reversal of 672756947 is 749657276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672756947 - 2² = 672756943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672756943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10850888 + ... + 10850949.

It is an arithmetic number, because the mean of its divisors is an integer number (173614704).

Almost surely, 2^672756947 is an apocalyptic number.

672756947 is a deficient number, since it is larger than the sum of its proper divisors (21701869).

672756947 is a wasteful number, since it uses less digits than its factorization.

672756947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21701868.

The product of its digits is 4445280, while the sum is 53.

The square root of 672756947 is about 25937.5586168012. The cubic root of 672756947 is about 876.2325799564.

The spelling of 672756947 in words is "six hundred seventy-two million, seven hundred fifty-six thousand, nine hundred forty-seven".