616608653 has 4 divisors (see below), whose sum is σ = 649061760. Its totient is φ = 584155548.

The previous prime is 616608647. The next prime is 616608661. The reversal of 616608653 is 356806616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616608653 - 2⁸ = 616608397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616608653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616608623) 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 3 ways as a sum of consecutive naturals, for example, 16226525 + ... + 16226562.

It is an arithmetic number, because the mean of its divisors is an integer number (162265440).

Almost surely, 2^616608653 is an apocalyptic number.

It is an amenable number.

616608653 is a deficient number, since it is larger than the sum of its proper divisors (32453107).

616608653 is a wasteful number, since it uses less digits than its factorization.

616608653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32453106.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 616608653 is about 24831.6059287353. The cubic root of 616608653 is about 851.1443194283.

The spelling of 616608653 in words is "six hundred sixteen million, six hundred eight thousand, six hundred fifty-three".