416687261 has 2 divisors, whose sum is σ = 416687262. Its totient is φ = 416687260.

The previous prime is 416687239. The next prime is 416687267. The reversal of 416687261 is 162786614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372876100 + 43811161 = 19310^2 + 6619^2 .

It is a cyclic number.

It is not a de Polignac number, because 416687261 - 2¹⁸ = 416425117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (416687267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208343630 + 208343631.

It is an arithmetic number, because the mean of its divisors is an integer number (208343631).

Almost surely, 2^416687261 is an apocalyptic number.

It is an amenable number.

416687261 is a deficient number, since it is larger than the sum of its proper divisors (1).

416687261 is an equidigital number, since it uses as much as digits as its factorization.

416687261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 416687261 is about 20412.9189730425. The cubic root of 416687261 is about 746.9130964292.

The spelling of 416687261 in words is "four hundred sixteen million, six hundred eighty-seven thousand, two hundred sixty-one".