770228881 has 2 divisors, whose sum is σ = 770228882. Its totient is φ = 770228880.

The previous prime is 770228863. The next prime is 770228917. The reversal of 770228881 is 188822077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402203025 + 368025856 = 20055^2 + 19184^2 .

It is a cyclic number.

It is not a de Polignac number, because 770228881 - 2¹⁵ = 770196113 is a prime.

It is a super-2 number, since 2×770228881² = 1186505058253024322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (770228861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385114440 + 385114441.

It is an arithmetic number, because the mean of its divisors is an integer number (385114441).

Almost surely, 2^770228881 is an apocalyptic number.

It is an amenable number.

770228881 is a deficient number, since it is larger than the sum of its proper divisors (1).

770228881 is an equidigital number, since it uses as much as digits as its factorization.

770228881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 770228881 is about 27752.9976939429. The cubic root of 770228881 is about 916.6564522204.

The spelling of 770228881 in words is "seven hundred seventy million, two hundred twenty-eight thousand, eight hundred eighty-one".