117667639 has 2 divisors, whose sum is σ = 117667640. Its totient is φ = 117667638.

The previous prime is 117667633. The next prime is 117667673. The reversal of 117667639 is 936766711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117667639 - 2⁵ = 117667607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117667633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58833819 + 58833820.

It is an arithmetic number, because the mean of its divisors is an integer number (58833820).

Almost surely, 2^117667639 is an apocalyptic number.

117667639 is a deficient number, since it is larger than the sum of its proper divisors (1).

117667639 is an equidigital number, since it uses as much as digits as its factorization.

117667639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 117667639 is about 10847.4715487066. The cubic root of 117667639 is about 490.0258753516.

The spelling of 117667639 in words is "one hundred seventeen million, six hundred sixty-seven thousand, six hundred thirty-nine".