77964322 has 4 divisors (see below), whose sum is σ = 116946486. Its totient is φ = 38982160.

The previous prime is 77964301. The next prime is 77964323. The reversal of 77964322 is 22346977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22346977 = 379 ⋅58963.

It can be written as a sum of positive squares in only one way, i.e., 72437121 + 5527201 = 8511^2 + 2351^2 .

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 not an unprimeable number, because it can be changed into a prime (77964323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19491079 + ... + 19491082.

Almost surely, 2^77964322 is an apocalyptic number.

77964322 is a deficient number, since it is larger than the sum of its proper divisors (38982164).

77964322 is a wasteful number, since it uses less digits than its factorization.

77964322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38982163.

The product of its digits is 127008, while the sum is 40.

The square root of 77964322 is about 8829.7407662966. The cubic root of 77964322 is about 427.2007129711.

The spelling of 77964322 in words is "seventy-seven million, nine hundred sixty-four thousand, three hundred twenty-two".