621046 has 12 divisors (see below), whose sum is σ = 975492. Its totient is φ = 296516.

The previous prime is 621043. The next prime is 621059. The reversal of 621046 is 640126.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621043) 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 5 ways as a sum of consecutive naturals, for example, 765 + ... + 1351.

It is an arithmetic number, because the mean of its divisors is an integer number (81291).

2⁶²¹⁰⁴⁶ is an apocalyptic number.

621046 is a deficient number, since it is larger than the sum of its proper divisors (354446).

621046 is a wasteful number, since it uses less digits than its factorization.

621046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 621046 is about 788.0647181545. The cubic root of 621046 is about 85.3181159117.

The spelling of 621046 in words is "six hundred twenty-one thousand, forty-six".