770786213 has 2 divisors, whose sum is σ = 770786214. Its totient is φ = 770786212.

The previous prime is 770786161. The next prime is 770786231. The reversal of 770786213 is 312687077.

Together with next prime (770786231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 704477764 + 66308449 = 26542^2 + 8143^2 .

It is a cyclic number.

It is not a de Polignac number, because 770786213 - 2⁸ = 770785957 is a prime.

It is a super-2 number, since 2×770786213² = 1188222772301762738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770786293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385393106 + 385393107.

It is an arithmetic number, because the mean of its divisors is an integer number (385393107).

Almost surely, 2^770786213 is an apocalyptic number.

It is an amenable number.

770786213 is a deficient number, since it is larger than the sum of its proper divisors (1).

770786213 is an equidigital number, since it uses as much as digits as its factorization.

770786213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 770786213 is about 27763.0368115594. The cubic root of 770786213 is about 916.8774942217.

The spelling of 770786213 in words is "seven hundred seventy million, seven hundred eighty-six thousand, two hundred thirteen".