66000137 has 16 divisors (see below), whose sum is σ = 80416512. Its totient is φ = 52876800.

The previous prime is 66000083. The next prime is 66000149. The reversal of 66000137 is 73100066.

It is not a de Polignac number, because 66000137 - 2⁶ = 66000073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66000157) 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, 16133 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (5026032).

Almost surely, 2^66000137 is an apocalyptic number.

It is an amenable number.

66000137 is a deficient number, since it is larger than the sum of its proper divisors (14416375).

66000137 is a wasteful number, since it uses less digits than its factorization.

66000137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 66000137 is about 8124.0468363987. The cubic root of 66000137 is about 404.1242816832.

The spelling of 66000137 in words is "sixty-six million, one hundred thirty-seven", and thus it is an aban number.