77320323 has 12 divisors (see below), whose sum is σ = 111763080. Its totient is φ = 51510816.

The previous prime is 77320307. The next prime is 77320337. The reversal of 77320323 is 32302377.

It is a happy number.

It is not a de Polignac number, because 77320323 - 2⁴ = 77320307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77300323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19215 + ... + 22887.

It is an arithmetic number, because the mean of its divisors is an integer number (9313590).

Almost surely, 2^77320323 is an apocalyptic number.

77320323 is a deficient number, since it is larger than the sum of its proper divisors (34442757).

77320323 is a wasteful number, since it uses less digits than its factorization.

77320323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018 (or 6015 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 27.

The square root of 77320323 is about 8793.1975412816. The cubic root of 77320323 is about 426.0212083602.

It can be divided in two parts, 77 and 320323, that added together give a triangular number (320400 = T₈₀₀).

The spelling of 77320323 in words is "seventy-seven million, three hundred twenty thousand, three hundred twenty-three".