620972 has 18 divisors (see below), whose sum is σ = 1195404. Its totient is φ = 282040.

The previous prime is 620957. The next prime is 620981. The reversal of 620972 is 279026.

It is an unprimeable number.

620972 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 in 5 ways as a sum of consecutive naturals, for example, 158 + ... + 1125.

2⁶²⁰⁹⁷² is an apocalyptic number.

It is an amenable number.

620972 is a deficient number, since it is larger than the sum of its proper divisors (574432).

620972 is a wasteful number, since it uses less digits than its factorization.

620972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 620972 is about 788.0177662972. The cubic root of 620972 is about 85.3147271174.

Adding to 620972 its reverse (279026), we get a palindrome (899998).

The spelling of 620972 in words is "six hundred twenty thousand, nine hundred seventy-two".