722686160 has 80 divisors (see below), whose sum is σ = 1923686400. Its totient is φ = 247339008.

The previous prime is 722686157. The next prime is 722686169. The reversal of 722686160 is 61686227.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722686169) 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, 564401 + ... + 565679.

It is an arithmetic number, because the mean of its divisors is an integer number (24046080).

Almost surely, 2^722686160 is an apocalyptic number.

722686160 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 722686160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961843200).

722686160 is an abundant number, since it is smaller than the sum of its proper divisors (1201000240).

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

722686160 is a wasteful number, since it uses less digits than its factorization.

722686160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 722686160 is about 26882.8227684520. The cubic root of 722686160 is about 897.3941744080.

The spelling of 722686160 in words is "seven hundred twenty-two million, six hundred eighty-six thousand, one hundred sixty".