672772826 has 12 divisors (see below), whose sum is σ = 1109241546. Its totient is φ = 305805720.

The previous prime is 672772823. The next prime is 672772847. The reversal of 672772826 is 628277276.

It can be written as a sum of positive squares in only one way, i.e., 486423025 + 186349801 = 22055^2 + 13651^2 .

It is not an unprimeable number, because it can be changed into a prime (672772823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1389785 + ... + 1390268.

Almost surely, 2^672772826 is an apocalyptic number.

672772826 is a deficient number, since it is larger than the sum of its proper divisors (436468720).

672772826 is a wasteful number, since it uses less digits than its factorization.

672772826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780077 (or 2780066 counting only the distinct ones).

The product of its digits is 790272, while the sum is 47.

The square root of 672772826 is about 25937.8647155081. The cubic root of 672772826 is about 876.2394737723.

The spelling of 672772826 in words is "six hundred seventy-two million, seven hundred seventy-two thousand, eight hundred twenty-six".