771777066 has 8 divisors (see below), whose sum is σ = 1543554144. Its totient is φ = 257259020.

The previous prime is 771777011. The next prime is 771777079. The reversal of 771777066 is 660777177.

It is a sphenic number, since it is the product of 3 distinct primes.

771777066 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64314750 + ... + 64314761.

It is an arithmetic number, because the mean of its divisors is an integer number (192944268).

Almost surely, 2^771777066 is an apocalyptic number.

771777066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

771777066 is a wasteful number, since it uses less digits than its factorization.

771777066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128629516.

The product of its (nonzero) digits is 605052, while the sum is 48.

The square root of 771777066 is about 27780.8759041179. The cubic root of 771777066 is about 917.2702108994.

The spelling of 771777066 in words is "seven hundred seventy-one million, seven hundred seventy-seven thousand, sixty-six".