621874 has 16 divisors (see below), whose sum is σ = 1062720. Its totient is φ = 270160.

The previous prime is 621871. The next prime is 621883. The reversal of 621874 is 478126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109 + ... + 1120.

It is an arithmetic number, because the mean of its divisors is an integer number (66420).

2⁶²¹⁸⁷⁴ is an apocalyptic number.

621874 is a deficient number, since it is larger than the sum of its proper divisors (440846).

621874 is a wasteful number, since it uses less digits than its factorization.

621874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its digits is 2688, while the sum is 28.

The square root of 621874 is about 788.5898807365. The cubic root of 621874 is about 85.3560154277.

It can be divided in two parts, 62 and 1874, that added together give a square (1936 = 44²).

The spelling of 621874 in words is "six hundred twenty-one thousand, eight hundred seventy-four".