780993 has 12 divisors (see below), whose sum is σ = 1140048. Its totient is φ = 515160.

The previous prime is 780991. The next prime is 781003. The reversal of 780993 is 399087.

It is not a de Polignac number, because 780993 - 2¹ = 780991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (780991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558 + ... + 1368.

It is an arithmetic number, because the mean of its divisors is an integer number (95004).

2⁷⁸⁰⁹⁹³ is an apocalyptic number.

It is an amenable number.

780993 is a deficient number, since it is larger than the sum of its proper divisors (359055).

780993 is a wasteful number, since it uses less digits than its factorization.

780993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 780993 is about 883.7380833709. The cubic root of 780993 is about 92.0906872001.

The spelling of 780993 in words is "seven hundred eighty thousand, nine hundred ninety-three".