77474484 has 18 divisors (see below), whose sum is σ = 195838370. Its totient is φ = 25824816.

The previous prime is 77474447. The next prime is 77474497. The reversal of 77474484 is 48447477.

It can be written as a sum of positive squares in only one way, i.e., 66781584 + 10692900 = 8172^2 + 3270^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1075999 + ... + 1076070.

Almost surely, 2^77474484 is an apocalyptic number.

It is an amenable number.

77474484 is an abundant number, since it is smaller than the sum of its proper divisors (118363886).

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

77474484 is a wasteful number, since it uses less digits than its factorization.

77474484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152079 (or 2152074 counting only the distinct ones).

The product of its digits is 702464, while the sum is 45.

The square root of 77474484 is about 8801.9591001095. The cubic root of 77474484 is about 426.3041536159.

The spelling of 77474484 in words is "seventy-seven million, four hundred seventy-four thousand, four hundred eighty-four".