623042261 has 8 divisors (see below), whose sum is σ = 626297184. Its totient is φ = 619796080.

The previous prime is 623042209. The next prime is 623042263. The reversal of 623042261 is 162240326.

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 623042261 - 2¹⁸ = 622780117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623042261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623042263) 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, 176726 + ... + 180216.

It is an arithmetic number, because the mean of its divisors is an integer number (78287148).

Almost surely, 2^623042261 is an apocalyptic number.

It is an amenable number.

623042261 is a deficient number, since it is larger than the sum of its proper divisors (3254923).

623042261 is a wasteful number, since it uses less digits than its factorization.

623042261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 623042261 is about 24960.8145099474. The cubic root of 623042261 is about 854.0943231765.

Adding to 623042261 its reverse (162240326), we get a palindrome (785282587).

The spelling of 623042261 in words is "six hundred twenty-three million, forty-two thousand, two hundred sixty-one".