612203623 has 16 divisors (see below), whose sum is σ = 639999360. Its totient is φ = 585190656.

The previous prime is 612203621. The next prime is 612203663. The reversal of 612203623 is 326302216.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 612203623 - 2¹ = 612203621 is a prime.

It is a super-2 number, since 2×612203623² = 749586552028652258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612203621) 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, 373161 + ... + 374797.

It is an arithmetic number, because the mean of its divisors is an integer number (39999960).

Almost surely, 2^612203623 is an apocalyptic number.

612203623 is a deficient number, since it is larger than the sum of its proper divisors (27795737).

612203623 is a wasteful number, since it uses less digits than its factorization.

612203623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 612203623 is about 24742.7488974043. The cubic root of 612203623 is about 849.1126254871.

Adding to 612203623 its reverse (326302216), we get a palindrome (938505839).

The spelling of 612203623 in words is "six hundred twelve million, two hundred three thousand, six hundred twenty-three".