613986479 has 4 divisors (see below), whose sum is σ = 614349984. Its totient is φ = 613622976.

The previous prime is 613986431. The next prime is 613986493. The reversal of 613986479 is 974689316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613986479 - 2¹⁶ = 613920943 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 613986479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613986419) 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, 179207 + ... + 182600.

It is an arithmetic number, because the mean of its divisors is an integer number (153587496).

Almost surely, 2^613986479 is an apocalyptic number.

613986479 is a deficient number, since it is larger than the sum of its proper divisors (363505).

613986479 is a wasteful number, since it uses less digits than its factorization.

613986479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363504.

The product of its digits is 1959552, while the sum is 53.

The square root of 613986479 is about 24778.7505536498. The cubic root of 613986479 is about 849.9360870052.

The spelling of 613986479 in words is "six hundred thirteen million, nine hundred eighty-six thousand, four hundred seventy-nine".