612228893 has 4 divisors (see below), whose sum is σ = 616902528. Its totient is φ = 607555260.

The previous prime is 612228839. The next prime is 612228901. The reversal of 612228893 is 398822216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 612228893 - 2⁶ = 612228829 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 612228893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612228823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2336621 + ... + 2336882.

It is an arithmetic number, because the mean of its divisors is an integer number (154225632).

Almost surely, 2^612228893 is an apocalyptic number.

It is an amenable number.

612228893 is a deficient number, since it is larger than the sum of its proper divisors (4673635).

612228893 is a wasteful number, since it uses less digits than its factorization.

612228893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673634.

The product of its digits is 82944, while the sum is 41.

The square root of 612228893 is about 24743.2595467937. The cubic root of 612228893 is about 849.1243082998.

The spelling of 612228893 in words is "six hundred twelve million, two hundred twenty-eight thousand, eight hundred ninety-three".