613398689 has 4 divisors (see below), whose sum is σ = 614520624. Its totient is φ = 612276756.

The previous prime is 613398677. The next prime is 613398701. The reversal of 613398689 is 986893316.

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 an interprime number because it is at equal distance from previous prime (613398677) and next prime (613398701).

It is a cyclic number.

It is not a de Polignac number, because 613398689 - 2²⁰ = 612350113 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 613398689.

It is not an unprimeable number, because it can be changed into a prime (613398619) 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, 560147 + ... + 561240.

It is an arithmetic number, because the mean of its divisors is an integer number (153630156).

Almost surely, 2^613398689 is an apocalyptic number.

It is an amenable number.

613398689 is a deficient number, since it is larger than the sum of its proper divisors (1121935).

613398689 is a wasteful number, since it uses less digits than its factorization.

613398689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121934.

The product of its digits is 1679616, while the sum is 53.

The square root of 613398689 is about 24766.8869460819. The cubic root of 613398689 is about 849.6647762314.

The spelling of 613398689 in words is "six hundred thirteen million, three hundred ninety-eight thousand, six hundred eighty-nine".