6719688634 has 16 divisors (see below), whose sum is σ = 10873816488. Its totient is φ = 3102541312.

The previous prime is 6719688631. The next prime is 6719688683. The reversal of 6719688634 is 4368869176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6295946409 + 423742225 = 79347^2 + 20585^2 .

It is not an unprimeable number, because it can be changed into a prime (6719688631) 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, 1862707 + ... + 1866310.

Almost surely, 2^6719688634 is an apocalyptic number.

6719688634 is a deficient number, since it is larger than the sum of its proper divisors (4154127854).

6719688634 is a wasteful number, since it uses less digits than its factorization.

6719688634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729089.

The product of its digits is 10450944, while the sum is 58.

The square root of 6719688634 is about 81973.7069675393. The cubic root of 6719688634 is about 1887.0484462498.

The spelling of 6719688634 in words is "six billion, seven hundred nineteen million, six hundred eighty-eight thousand, six hundred thirty-four".