611728646 has 8 divisors (see below), whose sum is σ = 971569080. Its totient is φ = 287872288.

The previous prime is 611728643. The next prime is 611728669. The reversal of 611728646 is 646827116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611728643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8995976 + ... + 8996043.

It is an arithmetic number, because the mean of its divisors is an integer number (121446135).

Almost surely, 2^611728646 is an apocalyptic number.

611728646 is a deficient number, since it is larger than the sum of its proper divisors (359840434).

611728646 is a wasteful number, since it uses less digits than its factorization.

611728646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17992038.

The product of its digits is 96768, while the sum is 41.

The square root of 611728646 is about 24733.1487279723. The cubic root of 611728646 is about 848.8929745412.

The spelling of 611728646 in words is "six hundred eleven million, seven hundred twenty-eight thousand, six hundred forty-six".