649059223 has 2 divisors, whose sum is σ = 649059224. Its totient is φ = 649059222.

The previous prime is 649059211. The next prime is 649059227. The reversal of 649059223 is 322950946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649059223 is a prime.

It is a super-2 number, since 2×649059223² = 842555749922727458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649059227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324529611 + 324529612.

It is an arithmetic number, because the mean of its divisors is an integer number (324529612).

Almost surely, 2^649059223 is an apocalyptic number.

649059223 is a deficient number, since it is larger than the sum of its proper divisors (1).

649059223 is an equidigital number, since it uses as much as digits as its factorization.

649059223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 649059223 is about 25476.6407322473. The cubic root of 649059223 is about 865.8209867205.

The spelling of 649059223 in words is "six hundred forty-nine million, fifty-nine thousand, two hundred twenty-three".