612494569 has 4 divisors (see below), whose sum is σ = 618809044. Its totient is φ = 606180096.

The previous prime is 612494557. The next prime is 612494573. The reversal of 612494569 is 965494216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148522969 + 463971600 = 12187^2 + 21540^2 .

It is a cyclic number.

It is not a de Polignac number, because 612494569 - 2¹⁷ = 612363497 is a prime.

It is a super-2 number, since 2×612494569² = 750299194108991522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612494539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3157092 + ... + 3157285.

It is an arithmetic number, because the mean of its divisors is an integer number (154702261).

Almost surely, 2^612494569 is an apocalyptic number.

It is an amenable number.

612494569 is a deficient number, since it is larger than the sum of its proper divisors (6314475).

612494569 is an equidigital number, since it uses as much as digits as its factorization.

612494569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6314474.

The product of its digits is 466560, while the sum is 46.

The square root of 612494569 is about 24748.6276185165. The cubic root of 612494569 is about 849.2471160320.

The spelling of 612494569 in words is "six hundred twelve million, four hundred ninety-four thousand, five hundred sixty-nine".