77322379 has 4 divisors (see below), whose sum is σ = 78967584. Its totient is φ = 75677176.

The previous prime is 77322361. The next prime is 77322431. The reversal of 77322379 is 97322377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97322377 = 307 ⋅317011.

It is a cyclic number.

It is not a de Polignac number, because 77322379 - 2⁵ = 77322347 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77322359) 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, 822532 + ... + 822625.

It is an arithmetic number, because the mean of its divisors is an integer number (19741896).

Almost surely, 2^77322379 is an apocalyptic number.

77322379 is a deficient number, since it is larger than the sum of its proper divisors (1645205).

77322379 is a wasteful number, since it uses less digits than its factorization.

77322379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645204.

The product of its digits is 111132, while the sum is 40.

The square root of 77322379 is about 8793.3144490573. The cubic root of 77322379 is about 426.0249843914.

The spelling of 77322379 in words is "seventy-seven million, three hundred twenty-two thousand, three hundred seventy-nine".