616553013 has 4 divisors (see below), whose sum is σ = 822070688. Its totient is φ = 411035340.

The previous prime is 616553011. The next prime is 616553029. The reversal of 616553013 is 310355616.

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 not a de Polignac number, because 616553013 - 2¹ = 616553011 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616553011) 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, 102758833 + ... + 102758838.

It is an arithmetic number, because the mean of its divisors is an integer number (205517672).

Almost surely, 2^616553013 is an apocalyptic number.

It is an amenable number.

616553013 is a deficient number, since it is larger than the sum of its proper divisors (205517675).

616553013 is a wasteful number, since it uses less digits than its factorization.

616553013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205517674.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 616553013 is about 24830.4855570728. The cubic root of 616553013 is about 851.1187175092.

The spelling of 616553013 in words is "six hundred sixteen million, five hundred fifty-three thousand, thirteen".