772240666 has 8 divisors (see below), whose sum is σ = 1161518400. Its totient is φ = 385067868.

The previous prime is 772240649. The next prime is 772240697. The reversal of 772240666 is 666042277.

It is a happy number.

772240666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 525316 + ... + 526783.

It is an arithmetic number, because the mean of its divisors is an integer number (145189800).

Almost surely, 2^772240666 is an apocalyptic number.

772240666 is a deficient number, since it is larger than the sum of its proper divisors (389277734).

772240666 is a wasteful number, since it uses less digits than its factorization.

772240666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052468.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 772240666 is about 27789.2185208580. The cubic root of 772240666 is about 917.4538396395.

The spelling of 772240666 in words is "seven hundred seventy-two million, two hundred forty thousand, six hundred sixty-six".