621272 has 8 divisors (see below), whose sum is σ = 1164900. Its totient is φ = 310632.

The previous prime is 621259. The next prime is 621289. The reversal of 621272 is 272126.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

621272 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38822 + ... + 38837.

2⁶²¹²⁷² is an apocalyptic number.

It is an amenable number.

621272 is a deficient number, since it is larger than the sum of its proper divisors (543628).

621272 is a wasteful number, since it uses less digits than its factorization.

621272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77665 (or 77661 counting only the distinct ones).

The product of its digits is 336, while the sum is 20.

The square root of 621272 is about 788.2080943507. The cubic root of 621272 is about 85.3284638063.

Adding to 621272 its reverse (272126), we get a palindrome (893398).

The spelling of 621272 in words is "six hundred twenty-one thousand, two hundred seventy-two".