6401344634 has 16 divisors (see below), whose sum is σ = 9821426688. Its totient is φ = 3127745712.

The previous prime is 6401344603. The next prime is 6401344643. The reversal of 6401344634 is 4364431046.

It is a junction number, because it is equal to n+sod(n) for n = 6401344594 and 6401344603.

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, 9239 + ... + 113525.

It is an arithmetic number, because the mean of its divisors is an integer number (613839168).

Almost surely, 2^6401344634 is an apocalyptic number.

6401344634 is a deficient number, since it is larger than the sum of its proper divisors (3420082054).

6401344634 is a wasteful number, since it uses less digits than its factorization.

6401344634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104989.

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 6401344634 is about 80008.4035211302. The cubic root of 6401344634 is about 1856.7655501351.

The spelling of 6401344634 in words is "six billion, four hundred one million, three hundred forty-four thousand, six hundred thirty-four".