610739663647 has 4 divisors (see below), whose sum is σ = 615401798616. Its totient is φ = 606077528680.

The previous prime is 610739663641. The next prime is 610739663659. The reversal of 610739663647 is 746366937016.

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 610739663647 - 2⁷ = 610739663519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 610739663591 and 610739663600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610739663641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2331067288 + ... + 2331067549.

It is an arithmetic number, because the mean of its divisors is an integer number (153850449654).

Almost surely, 2^610739663647 is an apocalyptic number.

610739663647 is a deficient number, since it is larger than the sum of its proper divisors (4662134969).

610739663647 is a wasteful number, since it uses less digits than its factorization.

610739663647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662134968.

The product of its (nonzero) digits is 20575296, while the sum is 58.

The spelling of 610739663647 in words is "six hundred ten billion, seven hundred thirty-nine million, six hundred sixty-three thousand, six hundred forty-seven".