77320735 has 4 divisors (see below), whose sum is σ = 92784888. Its totient is φ = 61856584.

The previous prime is 77320729. The next prime is 77320769. The reversal of 77320735 is 53702377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53702377 = 73 ⋅735649.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77320735 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77320735.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7732069 + ... + 7732078.

It is an arithmetic number, because the mean of its divisors is an integer number (23196222).

Almost surely, 2^77320735 is an apocalyptic number.

77320735 is a deficient number, since it is larger than the sum of its proper divisors (15464153).

77320735 is a wasteful number, since it uses less digits than its factorization.

77320735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15464152.

The product of its (nonzero) digits is 30870, while the sum is 34.

The square root of 77320735 is about 8793.2209684506. The cubic root of 77320735 is about 426.0219650411.

The spelling of 77320735 in words is "seventy-seven million, three hundred twenty thousand, seven hundred thirty-five".