66315675 has 24 divisors (see below), whose sum is σ = 112197184. Its totient is φ = 34544160.

The previous prime is 66315671. The next prime is 66315677. The reversal of 66315675 is 57651366.

It is not a de Polignac number, because 66315675 - 2² = 66315671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66315671) 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, 7057 + ... + 13506.

Almost surely, 2^66315675 is an apocalyptic number.

66315675 is a deficient number, since it is larger than the sum of its proper divisors (45881509).

66315675 is a wasteful number, since it uses less digits than its factorization.

66315675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20619 (or 20614 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 66315675 is about 8143.4436818830. The cubic root of 66315675 is about 404.7672798045.

The spelling of 66315675 in words is "sixty-six million, three hundred fifteen thousand, six hundred seventy-five".