672394745 has 16 divisors (see below), whose sum is σ = 881641152. Its totient is φ = 488228160.

The previous prime is 672394721. The next prime is 672394759. The reversal of 672394745 is 547493276.

It is not a de Polignac number, because 672394745 - 2¹⁰ = 672393721 is a prime.

It is a super-2 number, since 2×672394745² = 904229386207230050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 672394745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25859 + ... + 44871.

It is an arithmetic number, because the mean of its divisors is an integer number (55102572).

Almost surely, 2^672394745 is an apocalyptic number.

It is an amenable number.

672394745 is a deficient number, since it is larger than the sum of its proper divisors (209246407).

672394745 is a wasteful number, since it uses less digits than its factorization.

672394745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19672.

The product of its digits is 1270080, while the sum is 47.

The square root of 672394745 is about 25930.5754853223. The cubic root of 672394745 is about 876.0753016765.

The spelling of 672394745 in words is "six hundred seventy-two million, three hundred ninety-four thousand, seven hundred forty-five".