774406664693 has 2 divisors, whose sum is σ = 774406664694. Its totient is φ = 774406664692.

The previous prime is 774406664687. The next prime is 774406664699. The reversal of 774406664693 is 396466604477.

It is a balanced prime because it is at equal distance from previous prime (774406664687) and next prime (774406664699).

It can be written as a sum of positive squares in only one way, i.e., 398321290129 + 376085374564 = 631127^2 + 613258^2 .

It is a cyclic number.

It is not a de Polignac number, because 774406664693 - 2⁴ = 774406664677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774406664699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387203332346 + 387203332347.

It is an arithmetic number, because the mean of its divisors is an integer number (387203332347).

Almost surely, 2^774406664693 is an apocalyptic number.

It is an amenable number.

774406664693 is a deficient number, since it is larger than the sum of its proper divisors (1).

774406664693 is an equidigital number, since it uses as much as digits as its factorization.

774406664693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109734912, while the sum is 62.

The spelling of 774406664693 in words is "seven hundred seventy-four billion, four hundred six million, six hundred sixty-four thousand, six hundred ninety-three".