621472 has 12 divisors (see below), whose sum is σ = 1223586. Its totient is φ = 310720.

The previous prime is 621461. The next prime is 621473. The reversal of 621472 is 274126.

621472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 355216 + 266256 = 596^2 + 516^2 .

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (621473) by changing a digit.

621472 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9679 + ... + 9742.

2⁶²¹⁴⁷² is an apocalyptic number.

It is an amenable number.

621472 is a deficient number, since it is larger than the sum of its proper divisors (602114).

621472 is a wasteful number, since it uses less digits than its factorization.

621472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19431 (or 19423 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 621472 is about 788.3349541914. The cubic root of 621472 is about 85.3376191424.

Adding to 621472 its reverse (274126), we get a palindrome (895598).

The spelling of 621472 in words is "six hundred twenty-one thousand, four hundred seventy-two".