649694254 has 36 divisors (see below), whose sum is σ = 1098577872. Its totient is φ = 287822920.

The previous prime is 649694191. The next prime is 649694257. The reversal of 649694254 is 452496946.

649694254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 649694198 and 649694207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649694257) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2718267 + ... + 2718505.

It is an arithmetic number, because the mean of its divisors is an integer number (30516052).

Almost surely, 2^649694254 is an apocalyptic number.

649694254 is a deficient number, since it is larger than the sum of its proper divisors (448883618).

649694254 is a wasteful number, since it uses less digits than its factorization.

649694254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 299 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 649694254 is about 25489.1006902951. The cubic root of 649694254 is about 866.1032639672.

The spelling of 649694254 in words is "six hundred forty-nine million, six hundred ninety-four thousand, two hundred fifty-four".