611644253 has 16 divisors (see below), whose sum is σ = 677160000. Its totient is φ = 547841280.

The previous prime is 611644247. The next prime is 611644261. The reversal of 611644253 is 352446116.

It is a cyclic number.

It is not a de Polignac number, because 611644253 - 2⁴ = 611644237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611649253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221123 + ... + 223871.

It is an arithmetic number, because the mean of its divisors is an integer number (42322500).

Almost surely, 2^611644253 is an apocalyptic number.

It is an amenable number.

611644253 is a deficient number, since it is larger than the sum of its proper divisors (65515747).

611644253 is a wasteful number, since it uses less digits than its factorization.

611644253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052.

The product of its digits is 17280, while the sum is 32.

The square root of 611644253 is about 24731.4425984414. The cubic root of 611644253 is about 848.8539354890.

The spelling of 611644253 in words is "six hundred eleven million, six hundred forty-four thousand, two hundred fifty-three".