621134 has 4 divisors (see below), whose sum is σ = 931704. Its totient is φ = 310566.

The previous prime is 621133. The next prime is 621139. The reversal of 621134 is 431126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431126 = 2 ⋅215563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621133) 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 as a sum of consecutive naturals, namely, 155282 + ... + 155285.

It is an arithmetic number, because the mean of its divisors is an integer number (232926).

2⁶²¹¹³⁴ is an apocalyptic number.

621134 is a deficient number, since it is larger than the sum of its proper divisors (310570).

621134 is a wasteful number, since it uses less digits than its factorization.

621134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310569.

The product of its digits is 144, while the sum is 17.

The square root of 621134 is about 788.1205491548. The cubic root of 621134 is about 85.3221454788.

The spelling of 621134 in words is "six hundred twenty-one thousand, one hundred thirty-four".