66950147 has 12 divisors (see below), whose sum is σ = 73815000. Its totient is φ = 60677760.

The previous prime is 66950141. The next prime is 66950153. The reversal of 66950147 is 74105966.

It is an interprime number because it is at equal distance from previous prime (66950141) and next prime (66950153).

It is not a de Polignac number, because 66950147 - 2¹⁸ = 66688003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66950147.

It is not an unprimeable number, because it can be changed into a prime (66950141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52979 + ... + 54227.

It is an arithmetic number, because the mean of its divisors is an integer number (6151250).

Almost surely, 2^66950147 is an apocalyptic number.

66950147 is a deficient number, since it is larger than the sum of its proper divisors (6864853).

66950147 is a wasteful number, since it uses less digits than its factorization.

66950147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 66950147 is about 8182.3069485323. The cubic root of 66950147 is about 406.0540485528.

The spelling of 66950147 in words is "sixty-six million, nine hundred fifty thousand, one hundred forty-seven".