77330885 has 4 divisors (see below), whose sum is σ = 92797068. Its totient is φ = 61864704.

The previous prime is 77330873. The next prime is 77330923. The reversal of 77330885 is 58803377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58803377 = 443 ⋅132739.

It can be written as a sum of positive squares in 2 ways, for example, as 33744481 + 43586404 = 5809^2 + 6602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77330885 is a prime.

It is a Duffinian number.

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, 7733084 + ... + 7733093.

It is an arithmetic number, because the mean of its divisors is an integer number (23199267).

Almost surely, 2^77330885 is an apocalyptic number.

It is an amenable number.

77330885 is a deficient number, since it is larger than the sum of its proper divisors (15466183).

77330885 is a wasteful number, since it uses less digits than its factorization.

77330885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466182.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 77330885 is about 8793.7980986602. The cubic root of 77330885 is about 426.0406057233.

The spelling of 77330885 in words is "seventy-seven million, three hundred thirty thousand, eight hundred eighty-five".