621230 has 32 divisors (see below), whose sum is σ = 1214784. Its totient is φ = 228096.

The previous prime is 621227. The next prime is 621239. The reversal of 621230 is 32126.

621230 = T₄₁ + T₄₂ + ... + T₁₅₅.

It is a plaindrome in base 13 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8474 + ... + 8546.

It is an arithmetic number, because the mean of its divisors is an integer number (37962).

2⁶²¹²³⁰ is an apocalyptic number.

621230 is a deficient number, since it is larger than the sum of its proper divisors (593554).

621230 is a wasteful number, since it uses less digits than its factorization.

621230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 621230 is about 788.1814511900. The cubic root of 621230 is about 85.3265409361.

Adding to 621230 its reverse (32126), we get a palindrome (653356).

The spelling of 621230 in words is "six hundred twenty-one thousand, two hundred thirty".