647495503 has 2 divisors, whose sum is σ = 647495504. Its totient is φ = 647495502.

The previous prime is 647495491. The next prime is 647495561. The reversal of 647495503 is 305594746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647495503 - 2²⁵ = 613941071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 647495503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647495003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323747751 + 323747752.

It is an arithmetic number, because the mean of its divisors is an integer number (323747752).

Almost surely, 2^647495503 is an apocalyptic number.

647495503 is a deficient number, since it is larger than the sum of its proper divisors (1).

647495503 is an equidigital number, since it uses as much as digits as its factorization.

647495503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 647495503 is about 25445.9329363260. The cubic root of 647495503 is about 865.1251127125.

The spelling of 647495503 in words is "six hundred forty-seven million, four hundred ninety-five thousand, five hundred three".