649279094605 has 8 divisors (see below), whose sum is σ = 779203755000. Its totient is φ = 519377381376.

The previous prime is 649279094539. The next prime is 649279094663. The reversal of 649279094605 is 506490972946.

It can be written as a sum of positive squares in 4 ways, for example, as 2628305289 + 646650789316 = 51267^2 + 804146^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 649279094605 - 2²³ = 649270705997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5674480 + ... + 5787769.

It is an arithmetic number, because the mean of its divisors is an integer number (97400469375).

Almost surely, 2^649279094605 is an apocalyptic number.

It is an amenable number.

649279094605 is a deficient number, since it is larger than the sum of its proper divisors (129924660395).

649279094605 is a wasteful number, since it uses less digits than its factorization.

649279094605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11473583.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 649279094605 in words is "six hundred forty-nine billion, two hundred seventy-nine million, ninety-four thousand, six hundred five".