778013423 has 16 divisors (see below), whose sum is σ = 858021120. Its totient is φ = 705415480.

The previous prime is 778013413. The next prime is 778013443. The reversal of 778013423 is 324310877.

It is not a de Polignac number, because 778013423 - 2⁴ = 778013407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778013413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876686 + ... + 877572.

It is an arithmetic number, because the mean of its divisors is an integer number (53626320).

Almost surely, 2^778013423 is an apocalyptic number.

778013423 is a deficient number, since it is larger than the sum of its proper divisors (80007697).

778013423 is an equidigital number, since it uses as much as digits as its factorization.

778013423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 778013423 is about 27892.8919798575. The cubic root of 778013423 is about 919.7342580777.

The spelling of 778013423 in words is "seven hundred seventy-eight million, thirteen thousand, four hundred twenty-three".