672277840 has 40 divisors (see below), whose sum is σ = 1683282888. Its totient is φ = 248225280.

The previous prime is 672277831. The next prime is 672277841. The reversal of 672277840 is 48772276.

It can be written as a sum of positive squares in 4 ways, for example, as 41062464 + 631215376 = 6408^2 + 25124^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672277841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322171 + ... + 324250.

Almost surely, 2^672277840 is an apocalyptic number.

It is an amenable number.

672277840 is an abundant number, since it is smaller than the sum of its proper divisors (1011005048).

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

672277840 is a wasteful number, since it uses less digits than its factorization.

672277840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646447 (or 646441 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 672277840 is about 25928.3211951719. The cubic root of 672277840 is about 876.0245261858.

The spelling of 672277840 in words is "six hundred seventy-two million, two hundred seventy-seven thousand, eight hundred forty".