612966617 has 4 divisors (see below), whose sum is σ = 613046196. Its totient is φ = 612887040.

The previous prime is 612966593. The next prime is 612966631. The reversal of 612966617 is 716669216.

It is a happy number.

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 65593801 + 547372816 = 8099^2 + 23396^2 .

It is a cyclic number.

It is not a de Polignac number, because 612966617 - 2²² = 608772313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612966667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26828 + ... + 44109.

It is an arithmetic number, because the mean of its divisors is an integer number (153261549).

Almost surely, 2^612966617 is an apocalyptic number.

It is an amenable number.

612966617 is a deficient number, since it is larger than the sum of its proper divisors (79579).

612966617 is an equidigital number, since it uses as much as digits as its factorization.

612966617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79578.

The product of its digits is 163296, while the sum is 44.

The square root of 612966617 is about 24758.1626337659. The cubic root of 612966617 is about 849.4652308692.

The spelling of 612966617 in words is "six hundred twelve million, nine hundred sixty-six thousand, six hundred seventeen".