256612007 has 2 divisors, whose sum is σ = 256612008. Its totient is φ = 256612006.

The previous prime is 256611973. The next prime is 256612087. The reversal of 256612007 is 700216652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256612007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256612087) 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 as a sum of consecutive naturals, namely, 128306003 + 128306004.

It is an arithmetic number, because the mean of its divisors is an integer number (128306004).

Almost surely, 2^256612007 is an apocalyptic number.

256612007 is a deficient number, since it is larger than the sum of its proper divisors (1).

256612007 is an equidigital number, since it uses as much as digits as its factorization.

256612007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 256612007 is about 16019.1138019555. The cubic root of 256612007 is about 635.4660079794.

Adding to 256612007 its reverse (700216652), we get a palindrome (956828659).

The spelling of 256612007 in words is "two hundred fifty-six million, six hundred twelve thousand, seven".