672672746 has 4 divisors (see below), whose sum is σ = 1009009122. Its totient is φ = 336336372.

The previous prime is 672672739. The next prime is 672672757. The reversal of 672672746 is 647276276.

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

It can be written as a sum of positive squares in only one way, i.e., 571449025 + 101223721 = 23905^2 + 10061^2 .

It is a super-2 number, since 2×672672746² = 904977246422361032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 672672746.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 168168185 + ... + 168168188.

Almost surely, 2^672672746 is an apocalyptic number.

672672746 is a deficient number, since it is larger than the sum of its proper divisors (336336376).

672672746 is a wasteful number, since it uses less digits than its factorization.

672672746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336336375.

The product of its digits is 1185408, while the sum is 47.

The square root of 672672746 is about 25935.9354178715. The cubic root of 672672746 is about 876.1960225548.

The spelling of 672672746 in words is "six hundred seventy-two million, six hundred seventy-two thousand, seven hundred forty-six".