775064666 has 8 divisors (see below), whose sum is σ = 1200100224. Its totient is φ = 375031260.

The previous prime is 775064659. The next prime is 775064681. The reversal of 775064666 is 666460577.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 775064666.

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, 6250460 + ... + 6250583.

It is an arithmetic number, because the mean of its divisors is an integer number (150012528).

Almost surely, 2^775064666 is an apocalyptic number.

775064666 is a deficient number, since it is larger than the sum of its proper divisors (425035558).

775064666 is a wasteful number, since it uses less digits than its factorization.

775064666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501076.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The square root of 775064666 is about 27839.9832255697. The cubic root of 775064666 is about 918.5708221025.

The spelling of 775064666 in words is "seven hundred seventy-five million, sixty-four thousand, six hundred sixty-six".