77868446 has 8 divisors (see below), whose sum is σ = 116895960. Its totient is φ = 38903128.

The previous prime is 77868437. The next prime is 77868467. The reversal of 77868446 is 64486877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 77868394 and 77868403.

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 3 ways as a sum of consecutive naturals, for example, 12281 + ... + 17508.

It is an arithmetic number, because the mean of its divisors is an integer number (14611995).

Almost surely, 2^77868446 is an apocalyptic number.

77868446 is a deficient number, since it is larger than the sum of its proper divisors (39027514).

77868446 is a wasteful number, since it uses less digits than its factorization.

77868446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31098.

The product of its digits is 1806336, while the sum is 50.

The square root of 77868446 is about 8824.3099446926. The cubic root of 77868446 is about 427.0255255890.

The spelling of 77868446 in words is "seventy-seven million, eight hundred sixty-eight thousand, four hundred forty-six".