649542753 has 8 divisors (see below), whose sum is σ = 962285600. Its totient is φ = 433028484.

The previous prime is 649542743. The next prime is 649542757. The reversal of 649542753 is 357245946.

It is not a de Polignac number, because 649542753 - 2⁸ = 649542497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649542699 and 649542708.

It is not an unprimeable number, because it can be changed into a prime (649542757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12028543 + ... + 12028596.

It is an arithmetic number, because the mean of its divisors is an integer number (120285700).

Almost surely, 2^649542753 is an apocalyptic number.

It is an amenable number.

649542753 is a deficient number, since it is larger than the sum of its proper divisors (312742847).

649542753 is a wasteful number, since it uses less digits than its factorization.

649542753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24057148 (or 24057142 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 649542753 is about 25486.1286389283. The cubic root of 649542753 is about 866.0359370615.

The spelling of 649542753 in words is "six hundred forty-nine million, five hundred forty-two thousand, seven hundred fifty-three".