672308780 has 96 divisors (see below), whose sum is σ = 1712406528. Its totient is φ = 218361600.

The previous prime is 672308773. The next prime is 672308789. The reversal of 672308780 is 87803276.

It is not an unprimeable number, because it can be changed into a prime (672308789) 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, 84869 + ... + 92451.

It is an arithmetic number, because the mean of its divisors is an integer number (17837568).

Almost surely, 2^672308780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672308780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856203264).

672308780 is an abundant number, since it is smaller than the sum of its proper divisors (1040097748).

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

672308780 is a wasteful number, since it uses less digits than its factorization.

672308780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7647 (or 7645 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 672308780 is about 25928.9178331839. The cubic root of 672308780 is about 876.0379649664.

The spelling of 672308780 in words is "six hundred seventy-two million, three hundred eight thousand, seven hundred eighty".