612640003 has 2 divisors, whose sum is σ = 612640004. Its totient is φ = 612640002.

The previous prime is 612639997. The next prime is 612640013. The reversal of 612640003 is 300046216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612640003 - 2¹⁷ = 612508931 is a prime.

It is not a weakly prime, because it can be changed into another prime (612640013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306320001 + 306320002.

It is an arithmetic number, because the mean of its divisors is an integer number (306320002).

Almost surely, 2^612640003 is an apocalyptic number.

612640003 is a deficient number, since it is larger than the sum of its proper divisors (1).

612640003 is an equidigital number, since it uses as much as digits as its factorization.

612640003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 612640003 is about 24751.5656676502. The cubic root of 612640003 is about 849.3143273114.

Adding to 612640003 its reverse (300046216), we get a palindrome (912686219).

The spelling of 612640003 in words is "six hundred twelve million, six hundred forty thousand, three".