624427 has 8 divisors (see below), whose sum is σ = 690336. Its totient is φ = 561792.

The previous prime is 624419. The next prime is 624443. The reversal of 624427 is 724426.

624427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 624427 - 2³ = 624419 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 2¹⁷ + 4 + 4⁸ + 2¹⁷ + 7⁵ .

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (624467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (86292).

2⁶²⁴⁴²⁷ is an apocalyptic number.

624427 is a deficient number, since it is larger than the sum of its proper divisors (65909).

624427 is a wasteful number, since it uses less digits than its factorization.

624427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637.

The product of its digits is 2688, while the sum is 25.

The square root of 624427 is about 790.2069349227. The cubic root of 624427 is about 85.4726609125.

Subtracting 624427 from its reverse (724426), we obtain a palindrome (99999).

It can be divided in two parts, 62 and 4427, that added together give a square (4489 = 67²).

The spelling of 624427 in words is "six hundred twenty-four thousand, four hundred twenty-seven".