1614600661 has 2 divisors, whose sum is σ = 1614600662. Its totient is φ = 1614600660.

The previous prime is 1614600583. The next prime is 1614600671. The reversal of 1614600661 is 1660064161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1544961636 + 69639025 = 39306^2 + 8345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1614600661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1614600671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807300330 + 807300331.

It is an arithmetic number, because the mean of its divisors is an integer number (807300331).

Almost surely, 2^1614600661 is an apocalyptic number.

It is an amenable number.

1614600661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1614600661 is an equidigital number, since it uses as much as digits as its factorization.

1614600661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1614600661 is about 40182.0937856653. The cubic root of 1614600661 is about 1173.1540439204.

The spelling of 1614600661 in words is "one billion, six hundred fourteen million, six hundred thousand, six hundred sixty-one".