621293 has 4 divisors (see below), whose sum is σ = 634560. Its totient is φ = 608028.

The previous prime is 621289. The next prime is 621301. The reversal of 621293 is 392126.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 621293 - 2² = 621289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6563 + ... + 6656.

It is an arithmetic number, because the mean of its divisors is an integer number (158640).

2⁶²¹²⁹³ is an apocalyptic number.

It is an amenable number.

621293 is a deficient number, since it is larger than the sum of its proper divisors (13267).

621293 is a wasteful number, since it uses less digits than its factorization.

621293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13266.

The product of its digits is 648, while the sum is 23.

The square root of 621293 is about 788.2214155934. The cubic root of 621293 is about 85.3294252089.

The spelling of 621293 in words is "six hundred twenty-one thousand, two hundred ninety-three".