66017007 has 24 divisors (see below), whose sum is σ = 110522880. Its totient is φ = 37190160.

The previous prime is 66016981. The next prime is 66017023. The reversal of 66017007 is 70071066.

It is not a de Polignac number, because 66017007 - 2⁶ = 66016943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66017027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2907 + ... + 11852.

It is an arithmetic number, because the mean of its divisors is an integer number (4605120).

Almost surely, 2^66017007 is an apocalyptic number.

66017007 is a deficient number, since it is larger than the sum of its proper divisors (44505873).

66017007 is a wasteful number, since it uses less digits than its factorization.

66017007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14843 (or 14840 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 66017007 is about 8125.0850457088. The cubic root of 66017007 is about 404.1587108837.

The spelling of 66017007 in words is "sixty-six million, seventeen thousand, seven".