623144 has 8 divisors (see below), whose sum is σ = 1168410. Its totient is φ = 311568.

The previous prime is 623107. The next prime is 623171. The reversal of 623144 is 441326.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 438244 + 184900 = 662^2 + 430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623144.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38939 + ... + 38954.

2⁶²³¹⁴⁴ is an apocalyptic number.

It is an amenable number.

623144 is a deficient number, since it is larger than the sum of its proper divisors (545266).

623144 is a wasteful number, since it uses less digits than its factorization.

623144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77899 (or 77895 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 623144 is about 789.3947048214. The cubic root of 623144 is about 85.4140810110.

It can be divided in two parts, 623 and 144, that added together give a palindrome (767).

The spelling of 623144 in words is "six hundred twenty-three thousand, one hundred forty-four".