612985646 has 36 divisors (see below), whose sum is σ = 1140123672. Its totient is φ = 242023392.

The previous prime is 612985577. The next prime is 612985649. The reversal of 612985646 is 646589216.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 612985646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612985649) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1204040 + ... + 1204548.

It is an arithmetic number, because the mean of its divisors is an integer number (31670102).

Almost surely, 2^612985646 is an apocalyptic number.

612985646 is a deficient number, since it is larger than the sum of its proper divisors (527138026).

612985646 is an equidigital number, since it uses as much as digits as its factorization.

612985646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 531 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 612985646 is about 24758.5469282832. The cubic root of 612985646 is about 849.4740210742.

The spelling of 612985646 in words is "six hundred twelve million, nine hundred eighty-five thousand, six hundred forty-six".