77646846 has 16 divisors (see below), whose sum is σ = 155412864. Its totient is φ = 25862424.

The previous prime is 77646841. The next prime is 77646857. The reversal of 77646846 is 64864677.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77646795 and 77646804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77646841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5065 + ... + 13451.

It is an arithmetic number, because the mean of its divisors is an integer number (9713304).

Almost surely, 2^77646846 is an apocalyptic number.

77646846 is an abundant number, since it is smaller than the sum of its proper divisors (77766018).

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

77646846 is a wasteful number, since it uses less digits than its factorization.

77646846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9935.

The product of its digits is 1354752, while the sum is 48.

The square root of 77646846 is about 8811.7447761496. The cubic root of 77646846 is about 426.6200606916.

The spelling of 77646846 in words is "seventy-seven million, six hundred forty-six thousand, eight hundred forty-six".