621914 has 8 divisors (see below), whose sum is σ = 942240. Its totient is φ = 307836.

The previous prime is 621913. The next prime is 621923. The reversal of 621914 is 419126.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 621914.

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 3 ways as a sum of consecutive naturals, for example, 1304 + ... + 1715.

It is an arithmetic number, because the mean of its divisors is an integer number (117780).

2⁶²¹⁹¹⁴ is an apocalyptic number.

621914 is a deficient number, since it is larger than the sum of its proper divisors (320326).

621914 is a wasteful number, since it uses less digits than its factorization.

621914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124.

The product of its digits is 432, while the sum is 23.

The square root of 621914 is about 788.6152420541. The cubic root of 621914 is about 85.3578454701.

The spelling of 621914 in words is "six hundred twenty-one thousand, nine hundred fourteen".