613963 has 8 divisors (see below), whose sum is σ = 707840. Its totient is φ = 521640.

The previous prime is 613957. The next prime is 613967. The reversal of 613963 is 369316.

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

It is not a de Polignac number, because 613963 - 2⁹ = 613451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (613967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658 + ... + 1288.

It is an arithmetic number, because the mean of its divisors is an integer number (88480).

2⁶¹³⁹⁶³ is an apocalyptic number.

613963 is a deficient number, since it is larger than the sum of its proper divisors (93877).

613963 is a wasteful number, since it uses less digits than its factorization.

613963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777.

The product of its digits is 2916, while the sum is 28.

The square root of 613963 is about 783.5579110698. The cubic root of 613963 is about 84.9925252943.

The spelling of 613963 in words is "six hundred thirteen thousand, nine hundred sixty-three".