66146131 has 2 divisors, whose sum is σ = 66146132. Its totient is φ = 66146130.

The previous prime is 66146117. The next prime is 66146159. The reversal of 66146131 is 13164166.

It is an a-pointer prime, because the next prime (66146159) can be obtained adding 66146131 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66146131 - 2⁹ = 66145619 is a prime.

It is a super-2 number, since 2×66146131² = 8750621292538322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66146131.

It is not a weakly prime, because it can be changed into another prime (66146111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33073065 + 33073066.

It is an arithmetic number, because the mean of its divisors is an integer number (33073066).

Almost surely, 2^66146131 is an apocalyptic number.

66146131 is a deficient number, since it is larger than the sum of its proper divisors (1).

66146131 is an equidigital number, since it uses as much as digits as its factorization.

66146131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 66146131 is about 8133.0271731994. The cubic root of 66146131 is about 404.4220400085.

The spelling of 66146131 in words is "sixty-six million, one hundred forty-six thousand, one hundred thirty-one".