77840848 has 20 divisors (see below), whose sum is σ = 151358368. Its totient is φ = 38780640.

The previous prime is 77840839. The next prime is 77840857. The reversal of 77840848 is 84804877.

It is an interprime number because it is at equal distance from previous prime (77840839) and next prime (77840857).

It is a junction number, because it is equal to n+sod(n) for n = 77840798 and 77840807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4068 + ... + 13123.

Almost surely, 2^77840848 is an apocalyptic number.

It is an amenable number.

77840848 is a deficient number, since it is larger than the sum of its proper divisors (73517520).

77840848 is a wasteful number, since it uses less digits than its factorization.

77840848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17482 (or 17476 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 46.

The square root of 77840848 is about 8822.7460577759. The cubic root of 77840848 is about 426.9750710784.

The spelling of 77840848 in words is "seventy-seven million, eight hundred forty thousand, eight hundred forty-eight".