612703720 has 64 divisors (see below), whose sum is σ = 1424621520. Its totient is φ = 236980224.

The previous prime is 612703709. The next prime is 612703723. The reversal of 612703720 is 27307216.

It can be written as a sum of positive squares in 8 ways, for example, as 352913796 + 259789924 = 18786^2 + 16118^2 .

It is not an unprimeable number, because it can be changed into a prime (612703723) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 254844 + ... + 257236.

Almost surely, 2^612703720 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 612703720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712310760).

612703720 is an abundant number, since it is smaller than the sum of its proper divisors (811917800).

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

612703720 is a wasteful number, since it uses less digits than its factorization.

612703720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 612703720 is about 24752.8527648835. The cubic root of 612703720 is about 849.3437703148.

The spelling of 612703720 in words is "six hundred twelve million, seven hundred three thousand, seven hundred twenty".