77824089 has 12 divisors (see below), whose sum is σ = 128471616. Its totient is φ = 44470872.

The previous prime is 77824063. The next prime is 77824099. The reversal of 77824089 is 98042877.

It is not a de Polignac number, because 77824089 - 2¹⁵ = 77791321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77824039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617589 + ... + 617714.

It is an arithmetic number, because the mean of its divisors is an integer number (10705968).

Almost surely, 2^77824089 is an apocalyptic number.

It is an amenable number.

77824089 is a deficient number, since it is larger than the sum of its proper divisors (50647527).

77824089 is a wasteful number, since it uses less digits than its factorization.

77824089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235316 (or 1235313 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 77824089 is about 8821.7962456634. The cubic root of 77824089 is about 426.9444265475.

The spelling of 77824089 in words is "seventy-seven million, eight hundred twenty-four thousand, eighty-nine".