672572640 has 192 divisors, whose sum is σ = 2307916800. Its totient is φ = 163989504.

The previous prime is 672572633. The next prime is 672572671. The reversal of 672572640 is 46275276.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 263209 + ... + 265751.

It is an arithmetic number, because the mean of its divisors is an integer number (12020400).

Almost surely, 2^672572640 is an apocalyptic number.

672572640 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 672572640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153958400).

672572640 is an abundant number, since it is smaller than the sum of its proper divisors (1635344160).

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

672572640 is a wasteful number, since it uses less digits than its factorization.

672572640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609 (or 2601 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 672572640 is about 25934.0054754371. The cubic root of 672572640 is about 876.1525557373.

The spelling of 672572640 in words is "six hundred seventy-two million, five hundred seventy-two thousand, six hundred forty".