611728644 has 24 divisors (see below), whose sum is σ = 1430690688. Its totient is φ = 203434720.

The previous prime is 611728643. The next prime is 611728669. The reversal of 611728644 is 446827116.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (611728643) 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 7 ways as a sum of consecutive naturals, for example, 53967 + ... + 64310.

It is an arithmetic number, because the mean of its divisors is an integer number (59612112).

Almost surely, 2^611728644 is an apocalyptic number.

It is an amenable number.

611728644 is an abundant number, since it is smaller than the sum of its proper divisors (818962044).

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

611728644 is a wasteful number, since it uses less digits than its factorization.

611728644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118715 (or 118713 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 611728644 is about 24733.1486875408. The cubic root of 611728644 is about 848.8929736160.

The spelling of 611728644 in words is "six hundred eleven million, seven hundred twenty-eight thousand, six hundred forty-four".