77343863 has 4 divisors (see below), whose sum is σ = 81893520. Its totient is φ = 72794208.

The previous prime is 77343857. The next prime is 77343869. The reversal of 77343863 is 36834377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36834377 = 1871 ⋅19687.

It is an interprime number because it is at equal distance from previous prime (77343857) and next prime (77343869).

It is a cyclic number.

It is not a de Polignac number, because 77343863 - 2²⁴ = 60566647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77343863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77343869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2274803 + ... + 2274836.

It is an arithmetic number, because the mean of its divisors is an integer number (20473380).

Almost surely, 2^77343863 is an apocalyptic number.

77343863 is a deficient number, since it is larger than the sum of its proper divisors (4549657).

77343863 is a wasteful number, since it uses less digits than its factorization.

77343863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549656.

The product of its digits is 254016, while the sum is 41.

The square root of 77343863 is about 8794.5359741148. The cubic root of 77343863 is about 426.0644377093.

The spelling of 77343863 in words is "seventy-seven million, three hundred forty-three thousand, eight hundred sixty-three".