610645345 has 4 divisors (see below), whose sum is σ = 732774420. Its totient is φ = 488516272.

The previous prime is 610645309. The next prime is 610645363. The reversal of 610645345 is 543546016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 481231969 + 129413376 = 21937^2 + 11376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-610645345 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 610645345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61064530 + ... + 61064539.

It is an arithmetic number, because the mean of its divisors is an integer number (183193605).

Almost surely, 2^610645345 is an apocalyptic number.

It is an amenable number.

610645345 is a deficient number, since it is larger than the sum of its proper divisors (122129075).

610645345 is a wasteful number, since it uses less digits than its factorization.

610645345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122129074.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 610645345 is about 24711.2392445219. The cubic root of 610645345 is about 848.3915812148.

The spelling of 610645345 in words is "six hundred ten million, six hundred forty-five thousand, three hundred forty-five".