613387 has 4 divisors (see below), whose sum is σ = 640080. Its totient is φ = 586696.

The previous prime is 613381. The next prime is 613421. The reversal of 613387 is 783316.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613387 is a prime.

It is a super-2 number, since 2×613387² = 752487223538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613381) 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, 13312 + ... + 13357.

It is an arithmetic number, because the mean of its divisors is an integer number (160020).

2⁶¹³³⁸⁷ is an apocalyptic number.

613387 is a deficient number, since it is larger than the sum of its proper divisors (26693).

613387 is a wasteful number, since it uses less digits than its factorization.

613387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26692.

The product of its digits is 3024, while the sum is 28.

The square root of 613387 is about 783.1902706239. The cubic root of 613387 is about 84.9659379092.

It can be divided in two parts, 613 and 387, that added together give a cube (1000 = 10³).

The spelling of 613387 in words is "six hundred thirteen thousand, three hundred eighty-seven".