77881323 has 32 divisors (see below), whose sum is σ = 119714560. Its totient is φ = 44634240.

The previous prime is 77881277. The next prime is 77881339. The reversal of 77881323 is 32318877.

It is not a de Polignac number, because 77881323 - 2⁹ = 77880811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77881373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44340 + ... + 46062.

It is an arithmetic number, because the mean of its divisors is an integer number (3741080).

Almost surely, 2^77881323 is an apocalyptic number.

77881323 is a deficient number, since it is larger than the sum of its proper divisors (41833237).

77881323 is a wasteful number, since it uses less digits than its factorization.

77881323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819.

The product of its digits is 56448, while the sum is 39.

The square root of 77881323 is about 8825.0395466536. The cubic root of 77881323 is about 427.0490631702.

The spelling of 77881323 in words is "seventy-seven million, eight hundred eighty-one thousand, three hundred twenty-three".