77848668 has 48 divisors (see below), whose sum is σ = 206764320. Its totient is φ = 25315200.

The previous prime is 77848649. The next prime is 77848669. The reversal of 77848668 is 86684877.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77848669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4363 + ... + 13218.

It is an arithmetic number, because the mean of its divisors is an integer number (4307590).

Almost surely, 2^77848668 is an apocalyptic number.

It is an amenable number.

77848668 is an abundant number, since it is smaller than the sum of its proper divisors (128915652).

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

77848668 is a wasteful number, since it uses less digits than its factorization.

77848668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17635 (or 17627 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 77848668 is about 8823.1892193243. The cubic root of 77848668 is about 426.9893687697.

The spelling of 77848668 in words is "seventy-seven million, eight hundred forty-eight thousand, six hundred sixty-eight".