789975 has 18 divisors (see below), whose sum is σ = 1415336. Its totient is φ = 421200.

The previous prime is 789967. The next prime is 789977. The reversal of 789975 is 579987.

It is not a de Polignac number, because 789975 - 2³ = 789967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 789975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789977) 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 17 ways as a sum of consecutive naturals, for example, 1531 + ... + 1980.

2⁷⁸⁹⁹⁷⁵ is an apocalyptic number.

789975 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

789975 is a deficient number, since it is larger than the sum of its proper divisors (625361).

789975 is a wasteful number, since it uses less digits than its factorization.

789975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527 (or 3519 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 789975 is about 888.8053780215. The cubic root of 789975 is about 92.4423795026.

It can be divided in two parts, 789 and 975, that added together give a square (1764 = 42²).

The spelling of 789975 in words is "seven hundred eighty-nine thousand, nine hundred seventy-five".