77673843 has 48 divisors (see below), whose sum is σ = 131003040. Its totient is φ = 45209664.

The previous prime is 77673839. The next prime is 77673863. The reversal of 77673843 is 34837677.

It is not a de Polignac number, because 77673843 - 2² = 77673839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77673863) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 126405 + ... + 127017.

It is an arithmetic number, because the mean of its divisors is an integer number (2729230).

Almost surely, 2^77673843 is an apocalyptic number.

77673843 is a deficient number, since it is larger than the sum of its proper divisors (53329197).

77673843 is a wasteful number, since it uses less digits than its factorization.

77673843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 648 counting only the distinct ones).

The product of its digits is 592704, while the sum is 45.

The square root of 77673843 is about 8813.2765189798. The cubic root of 77673843 is about 426.6694987469.

The spelling of 77673843 in words is "seventy-seven million, six hundred seventy-three thousand, eight hundred forty-three".