621946 has 16 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 271728.

The previous prime is 621941. The next prime is 621983. The reversal of 621946 is 649126.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (621941) 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 7 ways as a sum of consecutive naturals, for example, 136 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (66150).

2⁶²¹⁹⁴⁶ is an apocalyptic number.

621946 is a deficient number, since it is larger than the sum of its proper divisors (436454).

621946 is a wasteful number, since it uses less digits than its factorization.

621946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293.

The product of its digits is 2592, while the sum is 28.

The square root of 621946 is about 788.6355305209. The cubic root of 621946 is about 85.3593094476.

It can be divided in two parts, 6 and 21946, that added together give a cube (21952 = 28³).

The spelling of 621946 in words is "six hundred twenty-one thousand, nine hundred forty-six".