613937857 has 8 divisors (see below), whose sum is σ = 682492160. Its totient is φ = 548430480.

The previous prime is 613937851. The next prime is 613937869. The reversal of 613937857 is 758739316.

613937857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 613937857 - 2¹⁹ = 613413569 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 613937857.

It is not an unprimeable number, because it can be changed into a prime (613937851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761307 + ... + 762112.

It is an arithmetic number, because the mean of its divisors is an integer number (85311520).

Almost surely, 2^613937857 is an apocalyptic number.

It is an amenable number.

613937857 is a deficient number, since it is larger than the sum of its proper divisors (68554303).

613937857 is a wasteful number, since it uses less digits than its factorization.

613937857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523463.

The product of its digits is 952560, while the sum is 49.

The square root of 613937857 is about 24777.7694113090. The cubic root of 613937857 is about 849.9136507439.

The spelling of 613937857 in words is "six hundred thirteen million, nine hundred thirty-seven thousand, eight hundred fifty-seven".