649135693 has 8 divisors (see below), whose sum is σ = 677634048. Its totient is φ = 620660304.

The previous prime is 649135687. The next prime is 649135717. The reversal of 649135693 is 396531946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649135693 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 (649135603) 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 7 ways as a sum of consecutive naturals, for example, 78471 + ... + 86347.

It is an arithmetic number, because the mean of its divisors is an integer number (84704256).

Almost surely, 2^649135693 is an apocalyptic number.

It is an amenable number.

649135693 is a deficient number, since it is larger than the sum of its proper divisors (28498355).

649135693 is a wasteful number, since it uses less digits than its factorization.

649135693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11483.

The product of its digits is 524880, while the sum is 46.

The square root of 649135693 is about 25478.1414746052. The cubic root of 649135693 is about 865.8549881020.

The spelling of 649135693 in words is "six hundred forty-nine million, one hundred thirty-five thousand, six hundred ninety-three".