613052666 has 8 divisors (see below), whose sum is σ = 920216244. Its totient is φ = 306313920.

The previous prime is 613052647. The next prime is 613052681. The reversal of 613052666 is 666250316.

It can be written as a sum of positive squares in 2 ways, for example, as 425225641 + 187827025 = 20621^2 + 13705^2 .

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

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, 102575 + ... + 108386.

Almost surely, 2^613052666 is an apocalyptic number.

613052666 is a deficient number, since it is larger than the sum of its proper divisors (307163578).

613052666 is a wasteful number, since it uses less digits than its factorization.

613052666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212416.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 613052666 is about 24759.9003632890. The cubic root of 613052666 is about 849.5049786638.

The spelling of 613052666 in words is "six hundred thirteen million, fifty-two thousand, six hundred sixty-six".