649663366946 has 8 divisors (see below), whose sum is σ = 1063085509584. Its totient is φ = 295301530420.

The previous prime is 649663366927. The next prime is 649663366973.

649663366946 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×649663366946² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14765076500 + ... + 14765076543.

It is an arithmetic number, because the mean of its divisors is an integer number (132885688698).

Almost surely, 2^649663366946 is an apocalyptic number.

649663366946 is a deficient number, since it is larger than the sum of its proper divisors (413422142638).

649663366946 is a wasteful number, since it uses less digits than its factorization.

649663366946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29530153056.

The product of its digits is 544195584, while the sum is 68.

The spelling of 649663366946 in words is "six hundred forty-nine billion, six hundred sixty-three million, three hundred sixty-six thousand, nine hundred forty-six".