780404845 has 8 divisors (see below), whose sum is σ = 1021620960. Its totient is φ = 567567120.

The previous prime is 780404843. The next prime is 780404857. The reversal of 780404845 is 548404087.

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

It is not a de Polignac number, because 780404845 - 2¹ = 780404843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780404798 and 780404807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780404843) 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, 7094535 + ... + 7094644.

It is an arithmetic number, because the mean of its divisors is an integer number (127702620).

Almost surely, 2^780404845 is an apocalyptic number.

It is an amenable number.

780404845 is a deficient number, since it is larger than the sum of its proper divisors (241216115).

780404845 is a wasteful number, since it uses less digits than its factorization.

780404845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14189195.

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 780404845 is about 27935.7270354648. The cubic root of 780404845 is about 920.6756398792.

The spelling of 780404845 in words is "seven hundred eighty million, four hundred four thousand, eight hundred forty-five".