709800 has 144 divisors (see below), whose sum is σ = 2723040. Its totient is φ = 149760.

The previous prime is 709799. The next prime is 709817. The reversal of 709800 is 8907.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 54594 + ... + 54606.

It is an arithmetic number, because the mean of its divisors is an integer number (18910).

2⁷⁰⁹⁸⁰⁰ is an apocalyptic number.

709800 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 709800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361520).

709800 is an abundant number, since it is smaller than the sum of its proper divisors (2013240).

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

709800 is a wasteful number, since it uses less digits than its factorization.

709800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 709800 is about 842.4962907930. The cubic root of 709800 is about 89.2028366181.

It can be divided in two parts, 70 and 9800, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 709800 in words is "seven hundred nine thousand, eight hundred".