771832993 has 2 divisors, whose sum is σ = 771832994. Its totient is φ = 771832992.

The previous prime is 771832981. The next prime is 771833039. The reversal of 771832993 is 399238177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426505104 + 345327889 = 20652^2 + 18583^2 .

It is a cyclic number.

It is not a de Polignac number, because 771832993 - 2⁵ = 771832961 is a prime.

It is a super-3 number, since 3×771832993³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (771832903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385916496 + 385916497.

It is an arithmetic number, because the mean of its divisors is an integer number (385916497).

Almost surely, 2^771832993 is an apocalyptic number.

It is an amenable number.

771832993 is a deficient number, since it is larger than the sum of its proper divisors (1).

771832993 is an equidigital number, since it uses as much as digits as its factorization.

771832993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 771832993 is about 27781.8824596175. The cubic root of 771832993 is about 917.2923670955.

The spelling of 771832993 in words is "seven hundred seventy-one million, eight hundred thirty-two thousand, nine hundred ninety-three".