672606820 has 48 divisors (see below), whose sum is σ = 1437004800. Its totient is φ = 264408320.

The previous prime is 672606811. The next prime is 672606829. The reversal of 672606820 is 28606276.

It is an interprime number because it is at equal distance from previous prime (672606811) and next prime (672606829).

It is a self number, because there is not a number n which added to its sum of digits gives 672606820.

It is not an unprimeable number, because it can be changed into a prime (672606829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317565 + ... + 319675.

It is an arithmetic number, because the mean of its divisors is an integer number (29937600).

Almost surely, 2^672606820 is an apocalyptic number.

It is an amenable number.

672606820 is an abundant number, since it is smaller than the sum of its proper divisors (764397980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672606820 is a wasteful number, since it uses less digits than its factorization.

672606820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 672606820 is about 25934.6644474148. The cubic root of 672606820 is about 876.1673974487.

The spelling of 672606820 in words is "six hundred seventy-two million, six hundred six thousand, eight hundred twenty".