77381323 has 4 divisors (see below), whose sum is σ = 77428008. Its totient is φ = 77334640.

The previous prime is 77381321. The next prime is 77381329. The reversal of 77381323 is 32318377.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77381323 - 2¹ = 77381321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77381321) 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, 20761 + ... + 24202.

It is an arithmetic number, because the mean of its divisors is an integer number (19357002).

Almost surely, 2^77381323 is an apocalyptic number.

77381323 is a deficient number, since it is larger than the sum of its proper divisors (46685).

77381323 is a wasteful number, since it uses less digits than its factorization.

77381323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46684.

The product of its digits is 21168, while the sum is 34.

The square root of 77381323 is about 8796.6654477705. The cubic root of 77381323 is about 426.1332119564.

The spelling of 77381323 in words is "seventy-seven million, three hundred eighty-one thousand, three hundred twenty-three".