66067075 has 12 divisors (see below), whose sum is σ = 84749040. Its totient is φ = 51030560.

The previous prime is 66067073. The next prime is 66067081. The reversal of 66067075 is 57076066.

It is not a de Polignac number, because 66067075 - 2¹ = 66067073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66067073) 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, 44839 + ... + 46288.

It is an arithmetic number, because the mean of its divisors is an integer number (7062420).

Almost surely, 2^66067075 is an apocalyptic number.

66067075 is a deficient number, since it is larger than the sum of its proper divisors (18681965).

66067075 is a wasteful number, since it uses less digits than its factorization.

66067075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91166 (or 91161 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 66067075 is about 8128.1655371923. The cubic root of 66067075 is about 404.2608578193.

The spelling of 66067075 in words is "sixty-six million, sixty-seven thousand, seventy-five".