778679053 has 8 divisors (see below), whose sum is σ = 812933568. Its totient is φ = 744457824.

The previous prime is 778679047. The next prime is 778679089. The reversal of 778679053 is 350976877.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 778679053 - 2¹³ = 778670861 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 (778679003) 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, 47550 + ... + 61792.

It is an arithmetic number, because the mean of its divisors is an integer number (101616696).

Almost surely, 2^778679053 is an apocalyptic number.

It is an amenable number.

778679053 is a deficient number, since it is larger than the sum of its proper divisors (34254515).

778679053 is a wasteful number, since it uses less digits than its factorization.

778679053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16643.

The product of its (nonzero) digits is 2222640, while the sum is 52.

The square root of 778679053 is about 27904.8213217716. The cubic root of 778679053 is about 919.9964764358.

The spelling of 778679053 in words is "seven hundred seventy-eight million, six hundred seventy-nine thousand, fifty-three".