77694776 has 16 divisors (see below), whose sum is σ = 147674400. Its totient is φ = 38314944.

The previous prime is 77694739. The next prime is 77694779. The reversal of 77694776 is 67749677.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77694779) 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 3 ways as a sum of consecutive naturals, for example, 65936 + ... + 67103.

It is an arithmetic number, because the mean of its divisors is an integer number (9229650).

Almost surely, 2^77694776 is an apocalyptic number.

It is an amenable number.

77694776 is a deficient number, since it is larger than the sum of its proper divisors (69979624).

77694776 is a wasteful number, since it uses less digits than its factorization.

77694776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133118 (or 133114 counting only the distinct ones).

The product of its digits is 3111696, while the sum is 53.

The square root of 77694776 is about 8814.4640222761. The cubic root of 77694776 is about 426.7078242632.

The spelling of 77694776 in words is "seventy-seven million, six hundred ninety-four thousand, seven hundred seventy-six".