780716 has 12 divisors (see below), whose sum is σ = 1386000. Its totient is φ = 384720.

The previous prime is 780707. The next prime is 780719. The reversal of 780716 is 617087.

It is not an unprimeable number, because it can be changed into a prime (780719) by changing a digit.

780716 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091 + ... + 1658.

It is an arithmetic number, because the mean of its divisors is an integer number (115500).

2⁷⁸⁰⁷¹⁶ is an apocalyptic number.

It is an amenable number.

780716 is a deficient number, since it is larger than the sum of its proper divisors (605284).

780716 is a wasteful number, since it uses less digits than its factorization.

780716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824 (or 2822 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 780716 is about 883.5813488299. The cubic root of 780716 is about 92.0797984397.

The spelling of 780716 in words is "seven hundred eighty thousand, seven hundred sixteen".