66375413 has 8 divisors (see below), whose sum is σ = 72693600. Its totient is φ = 60230448.

The previous prime is 66375391. The next prime is 66375427. The reversal of 66375413 is 31457366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66375413 - 2¹⁸ = 66113269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66375443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42503 + ... + 44036.

It is an arithmetic number, because the mean of its divisors is an integer number (9086700).

Almost surely, 2^66375413 is an apocalyptic number.

It is an amenable number.

66375413 is a deficient number, since it is larger than the sum of its proper divisors (6318187).

66375413 is a wasteful number, since it uses less digits than its factorization.

66375413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86611.

The product of its digits is 45360, while the sum is 35.

The square root of 66375413 is about 8147.1107148485. The cubic root of 66375413 is about 404.8887831587. Note that the first 3 decimals are identical.

The spelling of 66375413 in words is "sixty-six million, three hundred seventy-five thousand, four hundred thirteen".