77164213 has 4 divisors (see below), whose sum is σ = 88187680. Its totient is φ = 66140748.

The previous prime is 77164211. The next prime is 77164223. The reversal of 77164213 is 31246177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31246177 = 71 ⋅440087.

It is a cyclic number.

It is not a de Polignac number, because 77164213 - 2¹ = 77164211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77164211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5511723 + ... + 5511736.

It is an arithmetic number, because the mean of its divisors is an integer number (22046920).

Almost surely, 2^77164213 is an apocalyptic number.

It is an amenable number.

77164213 is a deficient number, since it is larger than the sum of its proper divisors (11023467).

77164213 is a wasteful number, since it uses less digits than its factorization.

77164213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023466.

The product of its digits is 7056, while the sum is 31.

The square root of 77164213 is about 8784.3163080572. The cubic root of 77164213 is about 425.7343024203.

It can be divided in two parts, 77164 and 213, that added together give a palindrome (77377).

The spelling of 77164213 in words is "seventy-seven million, one hundred sixty-four thousand, two hundred thirteen".