672895840 has 24 divisors (see below), whose sum is σ = 1589716800. Its totient is φ = 269158272.

The previous prime is 672895831. The next prime is 672895841. The reversal of 672895840 is 48598276.

It is a super-2 number, since 2×672895840² = 905577622978611200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672895841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102640 + ... + 2102959.

It is an arithmetic number, because the mean of its divisors is an integer number (66238200).

Almost surely, 2^672895840 is an apocalyptic number.

It is an amenable number.

672895840 is an abundant number, since it is smaller than the sum of its proper divisors (916820960).

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

672895840 is a wasteful number, since it uses less digits than its factorization.

672895840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205614 (or 4205606 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 672895840 is about 25940.2359279942. The cubic root of 672895840 is about 876.2928762233.

The spelling of 672895840 in words is "six hundred seventy-two million, eight hundred ninety-five thousand, eight hundred forty".