621934 has 8 divisors (see below), whose sum is σ = 965160. Its totient is φ = 300216.

The previous prime is 621923. The next prime is 621937. The reversal of 621934 is 439126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 621899 and 621908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621937) 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, 5304 + ... + 5419.

It is an arithmetic number, because the mean of its divisors is an integer number (120645).

2⁶²¹⁹³⁴ is an apocalyptic number.

621934 is a deficient number, since it is larger than the sum of its proper divisors (343226).

621934 is a wasteful number, since it uses less digits than its factorization.

621934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10754.

The product of its digits is 1296, while the sum is 25.

The square root of 621934 is about 788.6279224070. The cubic root of 621934 is about 85.3587604619.

The spelling of 621934 in words is "six hundred twenty-one thousand, nine hundred thirty-four".