77691596 has 6 divisors (see below), whose sum is σ = 135960300. Its totient is φ = 38845796.

The previous prime is 77691557. The next prime is 77691599. The reversal of 77691596 is 69519677.

It is not an unprimeable number, because it can be changed into a prime (77691599) 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 as a sum of consecutive naturals, namely, 9711446 + ... + 9711453.

It is an arithmetic number, because the mean of its divisors is an integer number (22660050).

Almost surely, 2^77691596 is an apocalyptic number.

It is an amenable number.

77691596 is a deficient number, since it is larger than the sum of its proper divisors (58268704).

77691596 is a wasteful number, since it uses less digits than its factorization.

77691596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19422903 (or 19422901 counting only the distinct ones).

The product of its digits is 714420, while the sum is 50.

The square root of 77691596 is about 8814.2836351005. The cubic root of 77691596 is about 426.7020025531.

It can be divided in two parts, 77691 and 596, that added together give a palindrome (78287).

The spelling of 77691596 in words is "seventy-seven million, six hundred ninety-one thousand, five hundred ninety-six".