612731304 has 192 divisors, whose sum is σ = 1851595200. Its totient is φ = 189236736.

The previous prime is 612731299. The next prime is 612731311. The reversal of 612731304 is 403137216.

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

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 47 ways as a sum of consecutive naturals, for example, 1957452 + ... + 1957764.

It is an arithmetic number, because the mean of its divisors is an integer number (9643725).

Almost surely, 2^612731304 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 612731304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925797600).

612731304 is an abundant number, since it is smaller than the sum of its proper divisors (1238863896).

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

612731304 is a wasteful number, since it uses less digits than its factorization.

612731304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 612731304 is about 24753.4099469144. The cubic root of 612731304 is about 849.3565159786.

The spelling of 612731304 in words is "six hundred twelve million, seven hundred thirty-one thousand, three hundred four".