396700261 has 2 divisors, whose sum is σ = 396700262. Its totient is φ = 396700260.

The previous prime is 396700231. The next prime is 396700313. The reversal of 396700261 is 162007693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372876100 + 23824161 = 19310^2 + 4881^2 .

It is a cyclic number.

It is not a de Polignac number, because 396700261 - 2⁹ = 396699749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396700231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198350130 + 198350131.

It is an arithmetic number, because the mean of its divisors is an integer number (198350131).

Almost surely, 2^396700261 is an apocalyptic number.

It is an amenable number.

396700261 is a deficient number, since it is larger than the sum of its proper divisors (1).

396700261 is an equidigital number, since it uses as much as digits as its factorization.

396700261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 396700261 is about 19917.3356902975. The cubic root of 396700261 is about 734.7746457689.

The spelling of 396700261 in words is "three hundred ninety-six million, seven hundred thousand, two hundred sixty-one".