771330081 has 16 divisors (see below), whose sum is σ = 1070294400. Its totient is φ = 493506048.

The previous prime is 771330059. The next prime is 771330101. The reversal of 771330081 is 180033177.

It is not a de Polignac number, because 771330081 - 2¹⁵ = 771297313 is a prime.

It is a super-2 number, since 2×771330081² = 1189900187710933122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (771330281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12016 + ... + 41073.

It is an arithmetic number, because the mean of its divisors is an integer number (66893400).

Almost surely, 2^771330081 is an apocalyptic number.

It is an amenable number.

771330081 is a deficient number, since it is larger than the sum of its proper divisors (298964319).

771330081 is a wasteful number, since it uses less digits than its factorization.

771330081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53288.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 771330081 is about 27772.8299062231. The cubic root of 771330081 is about 917.0930936021.

The spelling of 771330081 in words is "seven hundred seventy-one million, three hundred thirty thousand, eighty-one".