77441868 has 72 divisors (see below), whose sum is σ = 236894112. Its totient is φ = 20823552.

The previous prime is 77441867. The next prime is 77441869. The reversal of 77441868 is 86814477.

It is an interprime number because it is at equal distance from previous prime (77441867) and next prime (77441869).

It is not an unprimeable number, because it can be changed into a prime (77441867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4755 + ... + 13322.

It is an arithmetic number, because the mean of its divisors is an integer number (3290196).

Almost surely, 2^77441868 is an apocalyptic number.

It is an amenable number.

77441868 is an abundant number, since it is smaller than the sum of its proper divisors (159452244).

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

77441868 is a wasteful number, since it uses less digits than its factorization.

77441868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18111 (or 18106 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 77441868 is about 8800.1061357236. The cubic root of 77441868 is about 426.2443219260.

The spelling of 77441868 in words is "seventy-seven million, four hundred forty-one thousand, eight hundred sixty-eight".