77348648 has 32 divisors (see below), whose sum is σ = 160413960. Its totient is φ = 34732800.

The previous prime is 77348647. The next prime is 77348651. The reversal of 77348648 is 84684377.

It can be written as a sum of positive squares in 4 ways, for example, as 63075364 + 14273284 = 7942^2 + 3778^2 .

It is not an unprimeable number, because it can be changed into a prime (77348641) 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 7 ways as a sum of consecutive naturals, for example, 6203 + ... + 13898.

Almost surely, 2^77348648 is an apocalyptic number.

It is an amenable number.

77348648 is an abundant number, since it is smaller than the sum of its proper divisors (83065312).

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

77348648 is a wasteful number, since it uses less digits than its factorization.

77348648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20157 (or 20153 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 77348648 is about 8794.8080138227. The cubic root of 77348648 is about 426.0732239108.

The spelling of 77348648 in words is "seventy-seven million, three hundred forty-eight thousand, six hundred forty-eight".