672566730 has 64 divisors (see below), whose sum is σ = 1765120896. Its totient is φ = 162656000.

The previous prime is 672566729. The next prime is 672566749. The reversal of 672566730 is 37665276.

672566730 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149920 + ... + 154340.

It is an arithmetic number, because the mean of its divisors is an integer number (27580014).

Almost surely, 2^672566730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672566730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882560448).

672566730 is an abundant number, since it is smaller than the sum of its proper divisors (1092554166).

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

672566730 is a wasteful number, since it uses less digits than its factorization.

672566730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903.

The product of its (nonzero) digits is 317520, while the sum is 42.

The square root of 672566730 is about 25933.8915321245. The cubic root of 672566730 is about 876.1499894337.

The spelling of 672566730 in words is "six hundred seventy-two million, five hundred sixty-six thousand, seven hundred thirty".