77704068 has 24 divisors (see below), whose sum is σ = 195256768. Its totient is φ = 23908896.

The previous prime is 77704063. The next prime is 77704069. The reversal of 77704068 is 86040777.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (77704063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248896 + ... + 249207.

Almost surely, 2^77704068 is an apocalyptic number.

77704068 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

77704068 is an abundant number, since it is smaller than the sum of its proper divisors (117552700).

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

77704068 is a wasteful number, since it uses less digits than its factorization.

77704068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498123 (or 498121 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 77704068 is about 8814.9910947204. The cubic root of 77704068 is about 426.7248344632.

The spelling of 77704068 in words is "seventy-seven million, seven hundred four thousand, sixty-eight".