649347534857 has 8 divisors (see below), whose sum is σ = 742341892032. Its totient is φ = 556410783600.

The previous prime is 649347534853. The next prime is 649347534881. The reversal of 649347534857 is 758435743946.

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

It is not a de Polignac number, because 649347534857 - 2² = 649347534853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649347534793 and 649347534802.

It is not an unprimeable number, because it can be changed into a prime (649347534853) 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, 14377319 + ... + 14422412.

It is an arithmetic number, because the mean of its divisors is an integer number (92792736504).

Almost surely, 2^649347534857 is an apocalyptic number.

It is an amenable number.

649347534857 is a deficient number, since it is larger than the sum of its proper divisors (92994357175).

649347534857 is a wasteful number, since it uses less digits than its factorization.

649347534857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28802959.

The product of its digits is 304819200, while the sum is 65.

The spelling of 649347534857 in words is "six hundred forty-nine billion, three hundred forty-seven million, five hundred thirty-four thousand, eight hundred fifty-seven".