778240983 has 8 divisors (see below), whose sum is σ = 1117474288. Its totient is φ = 478917504.

The previous prime is 778240973. The next prime is 778240997. The reversal of 778240983 is 389042877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 778240983 - 2⁹ = 778240471 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 (778240973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9977410 + ... + 9977487.

It is an arithmetic number, because the mean of its divisors is an integer number (139684286).

Almost surely, 2^778240983 is an apocalyptic number.

778240983 is a deficient number, since it is larger than the sum of its proper divisors (339233305).

778240983 is a wasteful number, since it uses less digits than its factorization.

778240983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19954913.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 778240983 is about 27896.9708570662. The cubic root of 778240983 is about 919.8239199094.

The spelling of 778240983 in words is "seven hundred seventy-eight million, two hundred forty thousand, nine hundred eighty-three".