770640223 has 4 divisors (see below), whose sum is σ = 789436368. Its totient is φ = 751844080.

The previous prime is 770640217. The next prime is 770640239. The reversal of 770640223 is 322046077.

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: 322046077 = 131 ⋅2458367.

It is a cyclic number.

It is not a de Polignac number, because 770640223 - 2⁹ = 770639711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770644223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9398011 + ... + 9398092.

It is an arithmetic number, because the mean of its divisors is an integer number (197359092).

Almost surely, 2^770640223 is an apocalyptic number.

770640223 is a deficient number, since it is larger than the sum of its proper divisors (18796145).

770640223 is a wasteful number, since it uses less digits than its factorization.

770640223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796144.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 770640223 is about 27760.4074717933. The cubic root of 770640223 is about 916.8196038085.

The spelling of 770640223 in words is "seven hundred seventy million, six hundred forty thousand, two hundred twenty-three".