66739167 has 16 divisors (see below), whose sum is σ = 107861760. Its totient is φ = 40447800.

The previous prime is 66739163. The next prime is 66739171. The reversal of 66739167 is 76193766.

It is an interprime number because it is at equal distance from previous prime (66739163) and next prime (66739171).

It is not a de Polignac number, because 66739167 - 2² = 66739163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66739163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112059 + ... + 112652.

It is an arithmetic number, because the mean of its divisors is an integer number (6741360).

Almost surely, 2^66739167 is an apocalyptic number.

66739167 is a deficient number, since it is larger than the sum of its proper divisors (41122593).

66739167 is a wasteful number, since it uses less digits than its factorization.

66739167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224731 (or 224725 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 66739167 is about 8169.4043234498. The cubic root of 66739167 is about 405.6270670113.

The spelling of 66739167 in words is "sixty-six million, seven hundred thirty-nine thousand, one hundred sixty-seven".