77386769 has 4 divisors (see below), whose sum is σ = 79033344. Its totient is φ = 75740196.

The previous prime is 77386763. The next prime is 77386783. The reversal of 77386769 is 96768377.

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.

It is a cyclic number.

It is not a de Polignac number, because 77386769 - 2¹² = 77382673 is a prime.

It is a super-2 number, since 2×77386769² = 11977424032518722, which contains 22 as substring.

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 77386769.

It is not an unprimeable number, because it can be changed into a prime (77386763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823217 + ... + 823310.

It is an arithmetic number, because the mean of its divisors is an integer number (19758336).

Almost surely, 2^77386769 is an apocalyptic number.

It is an amenable number.

77386769 is a deficient number, since it is larger than the sum of its proper divisors (1646575).

77386769 is a wasteful number, since it uses less digits than its factorization.

77386769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646574.

The product of its digits is 2667168, while the sum is 53.

The square root of 77386769 is about 8796.9749914388. The cubic root of 77386769 is about 426.1432086280.

The spelling of 77386769 in words is "seventy-seven million, three hundred eighty-six thousand, seven hundred sixty-nine".