77364613 has 4 divisors (see below), whose sum is σ = 77400108. Its totient is φ = 77329120.

The previous prime is 77364607. The next prime is 77364647. The reversal of 77364613 is 31646377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31646377 = 7 ⋅4520911.

It can be written as a sum of positive squares in 2 ways, for example, as 53919649 + 23444964 = 7343^2 + 4842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77364613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77364913) 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, 14248 + ... + 18913.

It is an arithmetic number, because the mean of its divisors is an integer number (19350027).

Almost surely, 2^77364613 is an apocalyptic number.

It is an amenable number.

77364613 is a deficient number, since it is larger than the sum of its proper divisors (35495).

77364613 is a wasteful number, since it uses less digits than its factorization.

77364613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35494.

The product of its digits is 63504, while the sum is 37.

The square root of 77364613 is about 8795.7156047703. The cubic root of 77364613 is about 426.1025361709.

It can be divided in two parts, 77364 and 613, that added together give a palindrome (77977).

The spelling of 77364613 in words is "seventy-seven million, three hundred sixty-four thousand, six hundred thirteen".