774749772 has 60 divisors (see below), whose sum is σ = 2144502360. Its totient is φ = 243057024.

The previous prime is 774749749. The next prime is 774749783. The reversal of 774749772 is 277947477.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64822 + ... + 75837.

It is an arithmetic number, because the mean of its divisors is an integer number (35741706).

Almost surely, 2^774749772 is an apocalyptic number.

It is an amenable number.

774749772 is an abundant number, since it is smaller than the sum of its proper divisors (1369752588).

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

774749772 is a wasteful number, since it uses less digits than its factorization.

774749772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140692 (or 140681 counting only the distinct ones).

The product of its digits is 4840416, while the sum is 54.

The square root of 774749772 is about 27834.3272237717. The cubic root of 774749772 is about 918.4464059797.

The spelling of 774749772 in words is "seven hundred seventy-four million, seven hundred forty-nine thousand, seven hundred seventy-two".