614561705661 has 16 divisors (see below), whose sum is σ = 821363555264. Its totient is φ = 408734169984.

The previous prime is 614561705581. The next prime is 614561705687. The reversal of 614561705661 is 166507165416.

It is a happy number.

It is not a de Polignac number, because 614561705661 - 2⁷ = 614561705533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 614561705661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (614561745661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7751955 + ... + 7830831.

It is an arithmetic number, because the mean of its divisors is an integer number (51335222204).

Almost surely, 2^614561705661 is an apocalyptic number.

It is an amenable number.

614561705661 is a deficient number, since it is larger than the sum of its proper divisors (206801849603).

614561705661 is a wasteful number, since it uses less digits than its factorization.

614561705661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85020.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 614561705661 in words is "six hundred fourteen billion, five hundred sixty-one million, seven hundred five thousand, six hundred sixty-one".