770320823 has 4 divisors (see below), whose sum is σ = 796883640. Its totient is φ = 743758008.

The previous prime is 770320801. The next prime is 770320883. The reversal of 770320823 is 328023077.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328023077 = 14437 ⋅22721.

It is a cyclic number.

It is not a de Polignac number, because 770320823 - 2⁸ = 770320567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 770320823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770320883) 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, 13281365 + ... + 13281422.

It is an arithmetic number, because the mean of its divisors is an integer number (199220910).

Almost surely, 2^770320823 is an apocalyptic number.

770320823 is a deficient number, since it is larger than the sum of its proper divisors (26562817).

770320823 is a wasteful number, since it uses less digits than its factorization.

770320823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26562816.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 770320823 is about 27754.6540781902. The cubic root of 770320823 is about 916.6929244416.

The spelling of 770320823 in words is "seven hundred seventy million, three hundred twenty thousand, eight hundred twenty-three".