612243620 has 24 divisors (see below), whose sum is σ = 1313069184. Its totient is φ = 239686496.

The previous prime is 612243617. The next prime is 612243623. The reversal of 612243620 is 26342216.

It is an interprime number because it is at equal distance from previous prime (612243617) and next prime (612243623).

It is a self number, because there is not a number n which added to its sum of digits gives 612243620.

It is not an unprimeable number, because it can be changed into a prime (612243623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324722 + ... + 326601.

It is an arithmetic number, because the mean of its divisors is an integer number (54711216).

Almost surely, 2^612243620 is an apocalyptic number.

It is an amenable number.

612243620 is an abundant number, since it is smaller than the sum of its proper divisors (700825564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612243620 is a wasteful number, since it uses less digits than its factorization.

612243620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651379 (or 651377 counting only the distinct ones).

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

The square root of 612243620 is about 24743.5571412034. The cubic root of 612243620 is about 849.1311167302.

Adding to 612243620 its reverse (26342216), we get a palindrome (638585836).

The spelling of 612243620 in words is "six hundred twelve million, two hundred forty-three thousand, six hundred twenty".