672644007 has 20 divisors (see below), whose sum is σ = 1148359696. Its totient is φ = 384367680.

The previous prime is 672643987. The next prime is 672644017. The reversal of 672644007 is 700446276.

672644007 is a `hidden beast` number, since 6 + 7 + 2 + 644 + 0 + 0 + 7 = 666.

It is not a de Polignac number, because 672644007 - 2¹² = 672639911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672644017) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 592594 + ... + 593727.

Almost surely, 2^672644007 is an apocalyptic number.

672644007 is a deficient number, since it is larger than the sum of its proper divisors (475715689).

672644007 is a wasteful number, since it uses less digits than its factorization.

672644007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186340 (or 1186331 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 672644007 is about 25935.3813737142. The cubic root of 672644007 is about 876.1835442949.

The spelling of 672644007 in words is "six hundred seventy-two million, six hundred forty-four thousand, seven".