672701780 has 12 divisors (see below), whose sum is σ = 1412673780. Its totient is φ = 269080704.

The previous prime is 672701749. The next prime is 672701807. The reversal of 672701780 is 87107276.

It can be written as a sum of positive squares in 2 ways, for example, as 390931984 + 281769796 = 19772^2 + 16786^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16817525 + ... + 16817564.

It is an arithmetic number, because the mean of its divisors is an integer number (117722815).

Almost surely, 2^672701780 is an apocalyptic number.

It is an amenable number.

672701780 is an abundant number, since it is smaller than the sum of its proper divisors (739972000).

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

672701780 is a wasteful number, since it uses less digits than its factorization.

672701780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33635098 (or 33635096 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 672701780 is about 25936.4951371615. The cubic root of 672701780 is about 876.2086285406.

The spelling of 672701780 in words is "six hundred seventy-two million, seven hundred one thousand, seven hundred eighty".