612216603 has 8 divisors (see below), whose sum is σ = 906987600. Its totient is φ = 408144384.

The previous prime is 612216559. The next prime is 612216629. The reversal of 612216603 is 306612216.

It is not a de Polignac number, because 612216603 - 2¹² = 612212507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 22674689 = 612216603 / (6 + 1 + 2 + 2 + 1 + 6 + 6 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (612216643) 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, 11337318 + ... + 11337371.

It is an arithmetic number, because the mean of its divisors is an integer number (113373450).

Almost surely, 2^612216603 is an apocalyptic number.

612216603 is a deficient number, since it is larger than the sum of its proper divisors (294770997).

612216603 is a wasteful number, since it uses less digits than its factorization.

612216603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22674698 (or 22674692 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 612216603 is about 24743.0111950829. The cubic root of 612216603 is about 849.1186264338.

Adding to 612216603 its reverse (306612216), we get a palindrome (918828819).

The spelling of 612216603 in words is "six hundred twelve million, two hundred sixteen thousand, six hundred three".