77864463 has 16 divisors (see below), whose sum is σ = 116006400. Its totient is φ = 51616440.

The previous prime is 77864417. The next prime is 77864491. The reversal of 77864463 is 36446877.

It is not a de Polignac number, because 77864463 - 2¹⁰ = 77863439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77864363) 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, 3223 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (7250400).

Almost surely, 2^77864463 is an apocalyptic number.

77864463 is a deficient number, since it is larger than the sum of its proper divisors (38141937).

77864463 is a wasteful number, since it uses less digits than its factorization.

77864463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16299 (or 16293 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 77864463 is about 8824.0842584372. The cubic root of 77864463 is about 427.0182446266.

The spelling of 77864463 in words is "seventy-seven million, eight hundred sixty-four thousand, four hundred sixty-three".