6347641634 has 8 divisors (see below), whose sum is σ = 9778799388. Its totient is φ = 3088041840.

The previous prime is 6347641621. The next prime is 6347641649. The reversal of 6347641634 is 4361467436.

It can be written as a sum of positive squares in 2 ways, for example, as 6217795609 + 129846025 = 78853^2 + 11395^2 .

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

It is a Curzon number.

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, 42889397 + ... + 42889544.

Almost surely, 2^6347641634 is an apocalyptic number.

6347641634 is a deficient number, since it is larger than the sum of its proper divisors (3431157754).

6347641634 is a wasteful number, since it uses less digits than its factorization.

6347641634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85778980.

The product of its digits is 870912, while the sum is 44.

The square root of 6347641634 is about 79672.0881739647. The cubic root of 6347641634 is about 1851.5586216305.

The spelling of 6347641634 in words is "six billion, three hundred forty-seven million, six hundred forty-one thousand, six hundred thirty-four".