77774632 has 16 divisors (see below), whose sum is σ = 157045140. Its totient is φ = 35895936.

The previous prime is 77774597. The next prime is 77774633. The reversal of 77774632 is 23647777.

It can be written as a sum of positive squares in 2 ways, for example, as 70123876 + 7650756 = 8374^2 + 2766^2 .

It is not an unprimeable number, because it can be changed into a prime (77774633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373813 + ... + 374020.

Almost surely, 2^77774632 is an apocalyptic number.

It is an amenable number.

77774632 is an abundant number, since it is smaller than the sum of its proper divisors (79270508).

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

77774632 is a wasteful number, since it uses less digits than its factorization.

77774632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747852 (or 747848 counting only the distinct ones).

The product of its digits is 345744, while the sum is 43.

The square root of 77774632 is about 8818.9926862426. The cubic root of 77774632 is about 426.8539667028.

The spelling of 77774632 in words is "seventy-seven million, seven hundred seventy-four thousand, six hundred thirty-two".