613740725017666 has 8 divisors (see below), whose sum is σ = 921943375643664. Its totient is φ = 306426266469780.

The previous prime is 613740725017649. The next prime is 613740725017727. The reversal of 613740725017666 is 666710527047316.

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, 222048017800 + ... + 222048020563.

It is an arithmetic number, because the mean of its divisors is an integer number (115242921955458).

Almost surely, 2^{613740725017666} is an apocalyptic number.

613740725017666 is a deficient number, since it is larger than the sum of its proper divisors (308202650625998).

613740725017666 is a wasteful number, since it uses less digits than its factorization.

613740725017666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444096039056.

The product of its (nonzero) digits is 53343360, while the sum is 61.

The spelling of 613740725017666 in words is "six hundred thirteen trillion, seven hundred forty billion, seven hundred twenty-five million, seventeen thousand, six hundred sixty-six".