77694844 has 6 divisors (see below), whose sum is σ = 135965984. Its totient is φ = 38847420.

The previous prime is 77694839. The next prime is 77694847. The reversal of 77694844 is 44849677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77694847) 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, 9711852 + ... + 9711859.

Almost surely, 2^77694844 is an apocalyptic number.

It is an amenable number.

77694844 is a deficient number, since it is larger than the sum of its proper divisors (58271140).

77694844 is a wasteful number, since it uses less digits than its factorization.

77694844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19423715 (or 19423713 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 77694844 is about 8814.4678795716. The cubic root of 77694844 is about 426.7079487509.

The spelling of 77694844 in words is "seventy-seven million, six hundred ninety-four thousand, eight hundred forty-four".