780041864 has 16 divisors (see below), whose sum is σ = 1671518400. Its totient is φ = 334303632.

The previous prime is 780041839. The next prime is 780041897. The reversal of 780041864 is 468140087.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6964604 + ... + 6964715.

It is an arithmetic number, because the mean of its divisors is an integer number (104469900).

Almost surely, 2^780041864 is an apocalyptic number.

It is an amenable number.

780041864 is an abundant number, since it is smaller than the sum of its proper divisors (891476536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

780041864 is a wasteful number, since it uses less digits than its factorization.

780041864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13929332 (or 13929328 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 780041864 is about 27929.2295633088. The cubic root of 780041864 is about 920.5328765462.

The spelling of 780041864 in words is "seven hundred eighty million, forty-one thousand, eight hundred sixty-four".