780489601 has 8 divisors (see below), whose sum is σ = 829046664. Its totient is φ = 732226560.

The previous prime is 780489569. The next prime is 780489617. The reversal of 780489601 is 106984087.

It can be written as a sum of positive squares in 4 ways, for example, as 56610576 + 723879025 = 7524^2 + 26905^2 .

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 780489601 - 2⁵ = 780489569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780489691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68020 + ... + 78661.

It is an arithmetic number, because the mean of its divisors is an integer number (103630833).

Almost surely, 2^780489601 is an apocalyptic number.

It is an amenable number.

780489601 is a deficient number, since it is larger than the sum of its proper divisors (48557063).

780489601 is a wasteful number, since it uses less digits than its factorization.

780489601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147011.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 780489601 is about 27937.2439764555. The cubic root of 780489601 is about 920.7089687171.

The spelling of 780489601 in words is "seven hundred eighty million, four hundred eighty-nine thousand, six hundred one".