665274795701 has 2 divisors, whose sum is σ = 665274795702. Its totient is φ = 665274795700.

The previous prime is 665274795667. The next prime is 665274795733. The reversal of 665274795701 is 107597472566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628198908100 + 37075887601 = 792590^2 + 192551^2 .

It is a cyclic number.

It is not a de Polignac number, because 665274795701 - 2¹⁸ = 665274533557 is a prime.

It is a super-3 number, since 3×665274795701³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665274795781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332637397850 + 332637397851.

It is an arithmetic number, because the mean of its divisors is an integer number (332637397851).

Almost surely, 2^665274795701 is an apocalyptic number.

It is an amenable number.

665274795701 is a deficient number, since it is larger than the sum of its proper divisors (1).

665274795701 is an equidigital number, since it uses as much as digits as its factorization.

665274795701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22226400, while the sum is 59.

The spelling of 665274795701 in words is "six hundred sixty-five billion, two hundred seventy-four million, seven hundred ninety-five thousand, seven hundred one".