606513661 has 8 divisors (see below), whose sum is σ = 653364824. Its totient is φ = 559690560.

The previous prime is 606513637. The next prime is 606513671. The reversal of 606513661 is 166315606.

It can be written as a sum of positive squares in 4 ways, for example, as 14516100 + 591997561 = 3810^2 + 24331^2 .

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

It is not a de Polignac number, because 606513661 - 2¹¹ = 606511613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606513671) 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, 66391 + ... + 74971.

It is an arithmetic number, because the mean of its divisors is an integer number (81670603).

Almost surely, 2^606513661 is an apocalyptic number.

It is an amenable number.

606513661 is a deficient number, since it is larger than the sum of its proper divisors (46851163).

606513661 is a wasteful number, since it uses less digits than its factorization.

606513661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14031.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 606513661 is about 24627.4980661861. The cubic root of 606513661 is about 846.4738169452.

The spelling of 606513661 in words is "six hundred six million, five hundred thirteen thousand, six hundred sixty-one".