6734670638 has 16 divisors (see below), whose sum is σ = 10454400000. Its totient is φ = 3249960672.

The previous prime is 6734670637. The next prime is 6734670661. The reversal of 6734670638 is 8360764376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6734670637) 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, 138323 + ... + 180561.

It is an arithmetic number, because the mean of its divisors is an integer number (653400000).

Almost surely, 2^6734670638 is an apocalyptic number.

6734670638 is a deficient number, since it is larger than the sum of its proper divisors (3719729362).

6734670638 is a wasteful number, since it uses less digits than its factorization.

6734670638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45019.

The product of its (nonzero) digits is 3048192, while the sum is 50.

The square root of 6734670638 is about 82065.0390726770. The cubic root of 6734670638 is about 1888.4498396584.

The spelling of 6734670638 in words is "six billion, seven hundred thirty-four million, six hundred seventy thousand, six hundred thirty-eight".