606776561 has 8 divisors (see below), whose sum is σ = 611923200. Its totient is φ = 601641360.

The previous prime is 606776557. The next prime is 606776587. The reversal of 606776561 is 165677606.

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

It is a cyclic number.

It is not a de Polignac number, because 606776561 - 2² = 606776557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (606776531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128480 + ... + 133118.

It is an arithmetic number, because the mean of its divisors is an integer number (76490400).

Almost surely, 2^606776561 is an apocalyptic number.

It is an amenable number.

606776561 is a deficient number, since it is larger than the sum of its proper divisors (5146639).

606776561 is a wasteful number, since it uses less digits than its factorization.

606776561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 606776561 is about 24632.8350175127. The cubic root of 606776561 is about 846.5961037321.

It can be divided in two parts, 6067 and 76561, that added together give a palindrome (82628).

The spelling of 606776561 in words is "six hundred six million, seven hundred seventy-six thousand, five hundred sixty-one".