780380679 has 8 divisors (see below), whose sum is σ = 1120546672. Its totient is φ = 480234240.

The previous prime is 780380663. The next prime is 780380681. The reversal of 780380679 is 976083087.

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

It is not a de Polignac number, because 780380679 - 2⁴ = 780380663 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 (780387679) 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, 10004842 + ... + 10004919.

It is an arithmetic number, because the mean of its divisors is an integer number (140068334).

Almost surely, 2^780380679 is an apocalyptic number.

780380679 is a deficient number, since it is larger than the sum of its proper divisors (340165993).

780380679 is a wasteful number, since it uses less digits than its factorization.

780380679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20009777.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 780380679 is about 27935.2945035487. The cubic root of 780380679 is about 920.6661365736. Note that the first 3 decimals are identical.

The spelling of 780380679 in words is "seven hundred eighty million, three hundred eighty thousand, six hundred seventy-nine".