77164193 has 4 divisors (see below), whose sum is σ = 77293188. Its totient is φ = 77035200.

The previous prime is 77164189. The next prime is 77164211. The reversal of 77164193 is 39146177.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65820769 + 11343424 = 8113^2 + 3368^2 .

It is a cyclic number.

It is not a de Polignac number, because 77164193 - 2² = 77164189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77164123) 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 in 3 ways as a sum of consecutive naturals, for example, 63596 + ... + 64797.

It is an arithmetic number, because the mean of its divisors is an integer number (19323297).

Almost surely, 2^77164193 is an apocalyptic number.

It is an amenable number.

77164193 is a deficient number, since it is larger than the sum of its proper divisors (128995).

77164193 is a wasteful number, since it uses less digits than its factorization.

77164193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128994.

The product of its digits is 31752, while the sum is 38.

The square root of 77164193 is about 8784.3151696646. The cubic root of 77164193 is about 425.7342656386.

The spelling of 77164193 in words is "seventy-seven million, one hundred sixty-four thousand, one hundred ninety-three".