612344661 has 8 divisors (see below), whose sum is σ = 817173504. Its totient is φ = 407872800.

The previous prime is 612344651. The next prime is 612344671. The reversal of 612344661 is 166443216.

It is an interprime number because it is at equal distance from previous prime (612344651) and next prime (612344671).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612344661 - 2⁹ = 612344149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612344611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85216 + ... + 92121.

It is an arithmetic number, because the mean of its divisors is an integer number (102146688).

Almost surely, 2^612344661 is an apocalyptic number.

It is an amenable number.

612344661 is a deficient number, since it is larger than the sum of its proper divisors (204828843).

612344661 is a wasteful number, since it uses less digits than its factorization.

612344661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178491.

The product of its digits is 20736, while the sum is 33.

The square root of 612344661 is about 24745.5988208004. The cubic root of 612344661 is about 849.1778259894.

Adding to 612344661 its reverse (166443216), we get a palindrome (778787877).

The spelling of 612344661 in words is "six hundred twelve million, three hundred forty-four thousand, six hundred sixty-one".