1364502661 has 2 divisors, whose sum is σ = 1364502662. Its totient is φ = 1364502660.

The previous prime is 1364502631. The next prime is 1364502677. The reversal of 1364502661 is 1662054631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1361241025 + 3261636 = 36895^2 + 1806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1364502661 - 2²¹ = 1362405509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1364502631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682251330 + 682251331.

It is an arithmetic number, because the mean of its divisors is an integer number (682251331).

Almost surely, 2^1364502661 is an apocalyptic number.

It is an amenable number.

1364502661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1364502661 is an equidigital number, since it uses as much as digits as its factorization.

1364502661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1364502661 is about 36939.1751532164. The cubic root of 1364502661 is about 1109.1530104956.

The spelling of 1364502661 in words is "one billion, three hundred sixty-four million, five hundred two thousand, six hundred sixty-one".