649614405 has 16 divisors (see below), whose sum is σ = 1133872704. Its totient is φ = 314964480.

The previous prime is 649614403. The next prime is 649614409. The reversal of 649614405 is 504416946.

It is not a de Polignac number, because 649614405 - 2¹ = 649614403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649614403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1968364 + ... + 1968693.

It is an arithmetic number, because the mean of its divisors is an integer number (70867044).

Almost surely, 2^649614405 is an apocalyptic number.

It is an amenable number.

649614405 is a deficient number, since it is larger than the sum of its proper divisors (484258299).

649614405 is a wasteful number, since it uses less digits than its factorization.

649614405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937076.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 649614405 is about 25487.5343060093. The cubic root of 649614405 is about 866.0677804493.

The spelling of 649614405 in words is "six hundred forty-nine million, six hundred fourteen thousand, four hundred five".