613890747 has 24 divisors (see below), whose sum is σ = 909132224. Its totient is φ = 398959344.

The previous prime is 613890743. The next prime is 613890773. The reversal of 613890747 is 747098316.

It is not a de Polignac number, because 613890747 - 2² = 613890743 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613890743) 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 23 ways as a sum of consecutive naturals, for example, 247608 + ... + 250074.

Almost surely, 2^613890747 is an apocalyptic number.

613890747 is a deficient number, since it is larger than the sum of its proper divisors (295241477).

613890747 is a wasteful number, since it uses less digits than its factorization.

613890747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 613890747 is about 24776.8187425262. The cubic root of 613890747 is about 849.8919110538.

The spelling of 613890747 in words is "six hundred thirteen million, eight hundred ninety thousand, seven hundred forty-seven".