672140 has 24 divisors (see below), whose sum is σ = 1613472. Its totient is φ = 230400.

The previous prime is 672137. The next prime is 672143. The reversal of 672140 is 41276.

It is an interprime number because it is at equal distance from previous prime (672137) and next prime (672143).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672140.

It is not an unprimeable number, because it can be changed into a prime (672143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261 + ... + 2540.

It is an arithmetic number, because the mean of its divisors is an integer number (67228).

2⁶⁷²¹⁴⁰ is an apocalyptic number.

It is an amenable number.

672140 is an abundant number, since it is smaller than the sum of its proper divisors (941332).

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

672140 is a wasteful number, since it uses less digits than its factorization.

672140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4815 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 672140 is about 819.8414480862. The cubic root of 672140 is about 87.5964650409.

It can be divided in two parts, 67 and 2140, that multiplied together give a triangular number (143380 = T₅₃₅).

The spelling of 672140 in words is "six hundred seventy-two thousand, one hundred forty".