770992991 has 2 divisors, whose sum is σ = 770992992. Its totient is φ = 770992990.

The previous prime is 770992973. The next prime is 770993009. The reversal of 770992991 is 199299077.

It is a balanced prime because it is at equal distance from previous prime (770992973) and next prime (770993009).

It is a cyclic number.

It is not a de Polignac number, because 770992991 - 2¹⁰ = 770991967 is a prime.

It is a super-2 number, since 2×770992991² = 1188860384342252162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770992921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385496495 + 385496496.

It is an arithmetic number, because the mean of its divisors is an integer number (385496496).

Almost surely, 2^770992991 is an apocalyptic number.

770992991 is a deficient number, since it is larger than the sum of its proper divisors (1).

770992991 is an equidigital number, since it uses as much as digits as its factorization.

770992991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 642978, while the sum is 53.

The square root of 770992991 is about 27766.7605420582. The cubic root of 770992991 is about 916.9594768087.

The spelling of 770992991 in words is "seven hundred seventy million, nine hundred ninety-two thousand, nine hundred ninety-one".