613756947 has 8 divisors (see below), whose sum is σ = 819149760. Its totient is φ = 408767720.

The previous prime is 613756939. The next prime is 613756951. The reversal of 613756947 is 749657316.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 613756947 - 2³ = 613756939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613756896 and 613756905.

It is not an unprimeable number, because it can be changed into a prime (613756937) 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, 97329 + ... + 103442.

It is an arithmetic number, because the mean of its divisors is an integer number (102393720).

Almost surely, 2^613756947 is an apocalyptic number.

613756947 is a deficient number, since it is larger than the sum of its proper divisors (205392813).

613756947 is a wasteful number, since it uses less digits than its factorization.

613756947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201793.

The product of its digits is 952560, while the sum is 48.

The square root of 613756947 is about 24774.1184908767. The cubic root of 613756947 is about 849.8301607609.

The spelling of 613756947 in words is "six hundred thirteen million, seven hundred fifty-six thousand, nine hundred forty-seven".