771680417 has 2 divisors, whose sum is σ = 771680418. Its totient is φ = 771680416.

The previous prime is 771680369. The next prime is 771680423. The reversal of 771680417 is 714086177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766680721 + 4999696 = 27689^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 771680417 - 2¹⁸ = 771418273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (771680467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385840208 + 385840209.

It is an arithmetic number, because the mean of its divisors is an integer number (385840209).

Almost surely, 2^771680417 is an apocalyptic number.

It is an amenable number.

771680417 is a deficient number, since it is larger than the sum of its proper divisors (1).

771680417 is an equidigital number, since it uses as much as digits as its factorization.

771680417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 771680417 is about 27779.1363616654. The cubic root of 771680417 is about 917.2319196391.

The spelling of 771680417 in words is "seven hundred seventy-one million, six hundred eighty thousand, four hundred seventeen".