77748266 has 16 divisors (see below), whose sum is σ = 124493760. Its totient is φ = 36308160.

The previous prime is 77748227. The next prime is 77748277. The reversal of 77748266 is 66284777.

It is a self number, because there is not a number n which added to its sum of digits gives 77748266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11711 + ... + 17106.

It is an arithmetic number, because the mean of its divisors is an integer number (7780860).

Almost surely, 2^77748266 is an apocalyptic number.

77748266 is a deficient number, since it is larger than the sum of its proper divisors (46745494).

77748266 is a wasteful number, since it uses less digits than its factorization.

77748266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28909.

The product of its digits is 790272, while the sum is 47.

The square root of 77748266 is about 8817.4977176067. The cubic root of 77748266 is about 426.8057260215.

The spelling of 77748266 in words is "seventy-seven million, seven hundred forty-eight thousand, two hundred sixty-six".