621963 has 12 divisors (see below), whose sum is σ = 929760. Its totient is φ = 400176.

The previous prime is 621941. The next prime is 621983. The reversal of 621963 is 369126.

It is a happy number.

It is not a de Polignac number, because 621963 - 2⁹ = 621451 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (621913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 931 + ... + 1452.

It is an arithmetic number, because the mean of its divisors is an integer number (77480).

2⁶²¹⁹⁶³ is an apocalyptic number.

621963 is a deficient number, since it is larger than the sum of its proper divisors (307797).

621963 is a wasteful number, since it uses less digits than its factorization.

621963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418 (or 2415 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 621963 is about 788.6463085566. The cubic root of 621963 is about 85.3600871652.

It can be divided in two parts, 62 and 1963, that added together give a square (2025 = 45²).

The spelling of 621963 in words is "six hundred twenty-one thousand, nine hundred sixty-three".