77685433 has 12 divisors (see below), whose sum is σ = 95126160. Its totient is φ = 63082152.

The previous prime is 77685409. The next prime is 77685449. The reversal of 77685433 is 33458677.

It is not a de Polignac number, because 77685433 - 2⁵ = 77685401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77685433.

It is not an unprimeable number, because it can be changed into a prime (77685493) 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, 40791 + ... + 42652.

It is an arithmetic number, because the mean of its divisors is an integer number (7927180).

Almost surely, 2^77685433 is an apocalyptic number.

It is an amenable number.

77685433 is a deficient number, since it is larger than the sum of its proper divisors (17440727).

77685433 is a wasteful number, since it uses less digits than its factorization.

77685433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83476 (or 83469 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 77685433 is about 8813.9340251672. The cubic root of 77685433 is about 426.6907193336.

The spelling of 77685433 in words is "seventy-seven million, six hundred eighty-five thousand, four hundred thirty-three".