626720 has 24 divisors (see below), whose sum is σ = 1481004. Its totient is φ = 250624.

The previous prime is 626713. The next prime is 626723. The reversal of 626720 is 27626.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 620944 + 5776 = 788^2 + 76^2 .

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (626723) by changing a digit.

626720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799 + ... + 2118.

2⁶²⁶⁷²⁰ is an apocalyptic number.

It is an amenable number.

626720 is an abundant number, since it is smaller than the sum of its proper divisors (854284).

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

626720 is a wasteful number, since it uses less digits than its factorization.

626720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 626720 is about 791.6564911627. The cubic root of 626720 is about 85.5771563931.

The spelling of 626720 in words is "six hundred twenty-six thousand, seven hundred twenty".