621374 has 8 divisors (see below), whose sum is σ = 1003800. Its totient is φ = 286776.

The previous prime is 621371. The next prime is 621389. The reversal of 621374 is 473126.

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

It is a super-2 number, since 2×621374² = 772211295752, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621371) 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, 11924 + ... + 11975.

It is an arithmetic number, because the mean of its divisors is an integer number (125475).

2⁶²¹³⁷⁴ is an apocalyptic number.

621374 is a deficient number, since it is larger than the sum of its proper divisors (382426).

621374 is a wasteful number, since it uses less digits than its factorization.

621374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23914.

The product of its digits is 1008, while the sum is 23.

The square root of 621374 is about 788.2727954205. The cubic root of 621374 is about 85.3331332732. Note that the first 3 decimals are identical.

The spelling of 621374 in words is "six hundred twenty-one thousand, three hundred seventy-four".