780828801 has 4 divisors (see below), whose sum is σ = 1041105072. Its totient is φ = 520552532.

The previous prime is 780828793. The next prime is 780828809. The reversal of 780828801 is 108828087.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (780828793) and next prime (780828809).

It is a cyclic number.

It is not a de Polignac number, because 780828801 - 2³ = 780828793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (780828809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130138131 + ... + 130138136.

It is an arithmetic number, because the mean of its divisors is an integer number (260276268).

Almost surely, 2^780828801 is an apocalyptic number.

It is an amenable number.

780828801 is a deficient number, since it is larger than the sum of its proper divisors (260276271).

780828801 is a wasteful number, since it uses less digits than its factorization.

780828801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260276270.

The product of its (nonzero) digits is 57344, while the sum is 42.

The square root of 780828801 is about 27943.3140661590. The cubic root of 780828801 is about 920.8423291319.

The spelling of 780828801 in words is "seven hundred eighty million, eight hundred twenty-eight thousand, eight hundred one".