606493718881 has 4 divisors (see below), whose sum is σ = 606534250500. Its totient is φ = 606453187264.

The previous prime is 606493718861. The next prime is 606493718891. The reversal of 606493718881 is 188817394606.

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 141902890000 + 464590828881 = 376700^2 + 681609^2 .

It is a cyclic number.

It is not a de Polignac number, because 606493718881 - 2¹⁷ = 606493587809 is a prime.

It is a super-2 number, since 2×606493718881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (606493718861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20243356 + ... + 20273293.

It is an arithmetic number, because the mean of its divisors is an integer number (151633562625).

Almost surely, 2^606493718881 is an apocalyptic number.

It is an amenable number.

606493718881 is a deficient number, since it is larger than the sum of its proper divisors (40531619).

606493718881 is a wasteful number, since it uses less digits than its factorization.

606493718881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40531618.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 606493718881 in words is "six hundred six billion, four hundred ninety-three million, seven hundred eighteen thousand, eight hundred eighty-one".