77698834 has 16 divisors (see below), whose sum is σ = 120556800. Its totient is φ = 37518480.

The previous prime is 77698793. The next prime is 77698837. The reversal of 77698834 is 43889677.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77698837) 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, 38892 + ... + 40840.

It is an arithmetic number, because the mean of its divisors is an integer number (7534800).

Almost surely, 2^77698834 is an apocalyptic number.

77698834 is a deficient number, since it is larger than the sum of its proper divisors (42857966).

77698834 is a wasteful number, since it uses less digits than its factorization.

77698834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625.

The product of its digits is 2032128, while the sum is 52.

The square root of 77698834 is about 8814.6942091033. The cubic root of 77698834 is about 426.7152531205.

The spelling of 77698834 in words is "seventy-seven million, six hundred ninety-eight thousand, eight hundred thirty-four".