775761066 has 48 divisors (see below), whose sum is σ = 1770088320. Its totient is φ = 245060640.

The previous prime is 775761061. The next prime is 775761067. The reversal of 775761066 is 660167577.

775761066 is a `hidden beast` number, since 7 + 7 + 576 + 10 + 66 = 666.

It is not an unprimeable number, because it can be changed into a prime (775761061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36531 + ... + 53721.

It is an arithmetic number, because the mean of its divisors is an integer number (36876840).

Almost surely, 2^775761066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775761066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885044160).

775761066 is an abundant number, since it is smaller than the sum of its proper divisors (994327254).

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

775761066 is a wasteful number, since it uses less digits than its factorization.

775761066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17331 (or 17328 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 775761066 is about 27852.4876088295. The cubic root of 775761066 is about 918.8458534450.

The spelling of 775761066 in words is "seven hundred seventy-five million, seven hundred sixty-one thousand, sixty-six".