780395 has 16 divisors (see below), whose sum is σ = 1168128. Its totient is φ = 486240.

The previous prime is 780389. The next prime is 780397. The reversal of 780395 is 593087.

It is not a de Polignac number, because 780395 - 2⁴ = 780379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 629 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (73008).

2⁷⁸⁰³⁹⁵ is an apocalyptic number.

780395 is a deficient number, since it is larger than the sum of its proper divisors (387733).

780395 is a wasteful number, since it uses less digits than its factorization.

780395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 780395 is about 883.3996830427. The cubic root of 780395 is about 92.0671768346.

The spelling of 780395 in words is "seven hundred eighty thousand, three hundred ninety-five".