649775577946 has 8 divisors (see below), whose sum is σ = 1063269127584. Its totient is φ = 295352535420.

The previous prime is 649775577917. The next prime is 649775577947.

649775577946 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (649775577947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14767626750 + ... + 14767626793.

It is an arithmetic number, because the mean of its divisors is an integer number (132908640948).

Almost surely, 2^649775577946 is an apocalyptic number.

649775577946 is a deficient number, since it is larger than the sum of its proper divisors (413493549638).

649775577946 is a wasteful number, since it uses less digits than its factorization.

649775577946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29535253556.

The product of its digits is 2800526400, while the sum is 76.

The spelling of 649775577946 in words is "six hundred forty-nine billion, seven hundred seventy-five million, five hundred seventy-seven thousand, nine hundred forty-six".