672417140 has 12 divisors (see below), whose sum is σ = 1412076036. Its totient is φ = 268966848.

The previous prime is 672417107. The next prime is 672417149. The reversal of 672417140 is 41714276.

It can be written as a sum of positive squares in 2 ways, for example, as 371255824 + 301161316 = 19268^2 + 17354^2 .

It is a super-3 number, since 3×672417140³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 672417097 and 672417106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672417149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16810409 + ... + 16810448.

It is an arithmetic number, because the mean of its divisors is an integer number (117673003).

Almost surely, 2^672417140 is an apocalyptic number.

It is an amenable number.

672417140 is an abundant number, since it is smaller than the sum of its proper divisors (739658896).

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

672417140 is a wasteful number, since it uses less digits than its factorization.

672417140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33620866 (or 33620864 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 672417140 is about 25931.0073078544. The cubic root of 672417140 is about 876.0850278523.

The spelling of 672417140 in words is "six hundred seventy-two million, four hundred seventeen thousand, one hundred forty".