1364220761 has 2 divisors, whose sum is σ = 1364220762. Its totient is φ = 1364220760.

The previous prime is 1364220749. The next prime is 1364220787. The reversal of 1364220761 is 1670224631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1349166361 + 15054400 = 36731^2 + 3880^2 .

It is an emirp because it is prime and its reverse (1670224631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1364220761 - 2¹⁴ = 1364204377 is a prime.

It is a super-2 number, since 2×1364220761² = 3722196569486838242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1364220791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682110380 + 682110381.

It is an arithmetic number, because the mean of its divisors is an integer number (682110381).

Almost surely, 2^1364220761 is an apocalyptic number.

It is an amenable number.

1364220761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1364220761 is an equidigital number, since it uses as much as digits as its factorization.

1364220761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1364220761 is about 36935.3592239198. The cubic root of 1364220761 is about 1109.0766232577.

The spelling of 1364220761 in words is "one billion, three hundred sixty-four million, two hundred twenty thousand, seven hundred sixty-one".