672017040 has 160 divisors (see below), whose sum is σ = 2323363200. Its totient is φ = 178536960.

The previous prime is 672017033. The next prime is 672017041. The reversal of 672017040 is 40710276.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 672016995 and 672017013.

It is not an unprimeable number, because it can be changed into a prime (672017041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 908991 + ... + 909729.

It is an arithmetic number, because the mean of its divisors is an integer number (14521020).

Almost surely, 2^672017040 is an apocalyptic number.

672017040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672017040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161681600).

672017040 is an abundant number, since it is smaller than the sum of its proper divisors (1651346160).

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

672017040 is a wasteful number, since it uses less digits than its factorization.

672017040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 672017040 is about 25923.2914576834. The cubic root of 672017040 is about 875.9112313878.

The spelling of 672017040 in words is "six hundred seventy-two million, seventeen thousand, forty".