649102603 has 2 divisors, whose sum is σ = 649102604. Its totient is φ = 649102602.

The previous prime is 649102591. The next prime is 649102627. The reversal of 649102603 is 306201946.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649102603 is a prime.

It is not a weakly prime, because it can be changed into another prime (649102703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324551301 + 324551302.

It is an arithmetic number, because the mean of its divisors is an integer number (324551302).

Almost surely, 2^649102603 is an apocalyptic number.

649102603 is a deficient number, since it is larger than the sum of its proper divisors (1).

649102603 is an equidigital number, since it uses as much as digits as its factorization.

649102603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 649102603 is about 25477.4920861532. The cubic root of 649102603 is about 865.8402753957.

The spelling of 649102603 in words is "six hundred forty-nine million, one hundred two thousand, six hundred three".