709861920 has 96 divisors (see below), whose sum is σ = 2247715008. Its totient is φ = 188310528.

The previous prime is 709861891. The next prime is 709861921. The reversal of 709861920 is 29168907.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (709861921) 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, 90807 + ... + 98313.

It is an arithmetic number, because the mean of its divisors is an integer number (23413698).

Almost surely, 2^709861920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 709861920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1123857504).

709861920 is an abundant number, since it is smaller than the sum of its proper divisors (1537853088).

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

709861920 is a wasteful number, since it uses less digits than its factorization.

709861920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7722 (or 7714 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 709861920 is about 26643.2340379317. The cubic root of 709861920 is about 892.0543043749.

The spelling of 709861920 in words is "seven hundred nine million, eight hundred sixty-one thousand, nine hundred twenty".