613911967 has 4 divisors (see below), whose sum is σ = 614409496. Its totient is φ = 613414440.

The previous prime is 613911959. The next prime is 613912001. The reversal of 613911967 is 769119316.

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 613911967 - 2³ = 613911959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613911917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246909 + ... + 249382.

It is an arithmetic number, because the mean of its divisors is an integer number (153602374).

Almost surely, 2^613911967 is an apocalyptic number.

613911967 is a deficient number, since it is larger than the sum of its proper divisors (497529).

613911967 is a wasteful number, since it uses less digits than its factorization.

613911967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497528.

The product of its digits is 61236, while the sum is 43.

The square root of 613911967 is about 24777.2469616784. The cubic root of 613911967 is about 849.9017035120.

The spelling of 613911967 in words is "six hundred thirteen million, nine hundred eleven thousand, nine hundred sixty-seven".