672238945 has 16 divisors (see below), whose sum is σ = 928971648. Its totient is φ = 457441920.

The previous prime is 672238933. The next prime is 672239011. The reversal of 672238945 is 549832276.

It is not a de Polignac number, because 672238945 - 2⁷ = 672238817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 672238895 and 672238904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68724 + ... + 77893.

It is an arithmetic number, because the mean of its divisors is an integer number (58060728).

Almost surely, 2^672238945 is an apocalyptic number.

It is an amenable number.

672238945 is a deficient number, since it is larger than the sum of its proper divisors (256732703).

672238945 is a wasteful number, since it uses less digits than its factorization.

672238945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146760.

The product of its digits is 725760, while the sum is 46.

The square root of 672238945 is about 25927.5711357620. The cubic root of 672238945 is about 876.0076315682.

The spelling of 672238945 in words is "six hundred seventy-two million, two hundred thirty-eight thousand, nine hundred forty-five".