613216745 has 8 divisors (see below), whose sum is σ = 761234760. Its totient is φ = 473656960.

The previous prime is 613216739. The next prime is 613216757. The reversal of 613216745 is 547612316.

613216745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34140649 + 579076096 = 5843^2 + 24064^2 .

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

It is not a de Polignac number, because 613216745 - 2²² = 609022441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2114396 + ... + 2114685.

It is an arithmetic number, because the mean of its divisors is an integer number (95154345).

Almost surely, 2^613216745 is an apocalyptic number.

It is an amenable number.

613216745 is a deficient number, since it is larger than the sum of its proper divisors (148018015).

613216745 is a wasteful number, since it uses less digits than its factorization.

613216745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229115.

The product of its digits is 30240, while the sum is 35.

The square root of 613216745 is about 24763.2135434802. The cubic root of 613216745 is about 849.5807598061.

The spelling of 613216745 in words is "six hundred thirteen million, two hundred sixteen thousand, seven hundred forty-five".