649444743 has 16 divisors (see below), whose sum is σ = 962568160. Its totient is φ = 432770688.

The previous prime is 649444703. The next prime is 649444751. The reversal of 649444743 is 347444946.

It is not a de Polignac number, because 649444743 - 2⁸ = 649444487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649444703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83121 + ... + 90597.

It is an arithmetic number, because the mean of its divisors is an integer number (60160510).

Almost surely, 2^649444743 is an apocalyptic number.

649444743 is a deficient number, since it is larger than the sum of its proper divisors (313123417).

649444743 is a wasteful number, since it uses less digits than its factorization.

649444743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703 (or 10697 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The square root of 649444743 is about 25484.2057557225. The cubic root of 649444743 is about 865.9923759300.

The spelling of 649444743 in words is "six hundred forty-nine million, four hundred forty-four thousand, seven hundred forty-three".