616683493 has 4 divisors (see below), whose sum is σ = 625369248. Its totient is φ = 607997740.

The previous prime is 616683467. The next prime is 616683497. The reversal of 616683493 is 394386616.

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 616683493 - 2²⁵ = 583129061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616683497) 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, 4342771 + ... + 4342912.

It is an arithmetic number, because the mean of its divisors is an integer number (156342312).

Almost surely, 2^616683493 is an apocalyptic number.

It is an amenable number.

616683493 is a deficient number, since it is larger than the sum of its proper divisors (8685755).

616683493 is an equidigital number, since it uses as much as digits as its factorization.

616683493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685754.

The product of its digits is 559872, while the sum is 46.

The square root of 616683493 is about 24833.1128334730. The cubic root of 616683493 is about 851.1787535131.

The spelling of 616683493 in words is "six hundred sixteen million, six hundred eighty-three thousand, four hundred ninety-three".