646662462441 has 8 divisors (see below), whose sum is σ = 864971303520. Its totient is φ = 429730964832.

The previous prime is 646662462437. The next prime is 646662462449. The reversal of 646662462441 is 144264266646.

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

It is not a de Polignac number, because 646662462441 - 2² = 646662462437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646662462449) 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, 344334771 + ... + 344336648.

It is an arithmetic number, because the mean of its divisors is an integer number (108121412940).

Almost surely, 2^646662462441 is an apocalyptic number.

It is an amenable number.

646662462441 is a deficient number, since it is larger than the sum of its proper divisors (218308841079).

646662462441 is a wasteful number, since it uses less digits than its factorization.

646662462441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688671735.

The product of its digits is 7962624, while the sum is 51.

The spelling of 646662462441 in words is "six hundred forty-six billion, six hundred sixty-two million, four hundred sixty-two thousand, four hundred forty-one".