66348375 has 32 divisors (see below), whose sum is σ = 114229440. Its totient is φ = 34160000.

The previous prime is 66348367. The next prime is 66348383. The reversal of 66348375 is 57384366.

It is an interprime number because it is at equal distance from previous prime (66348367) and next prime (66348383).

It is not a de Polignac number, because 66348375 - 2³ = 66348367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7825 + ... + 13925.

It is an arithmetic number, because the mean of its divisors is an integer number (3569670).

Almost surely, 2^66348375 is an apocalyptic number.

66348375 is a deficient number, since it is larger than the sum of its proper divisors (47881065).

66348375 is a wasteful number, since it uses less digits than its factorization.

66348375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148 (or 6138 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 66348375 is about 8145.4511845569. The cubic root of 66348375 is about 404.8337985932.

The spelling of 66348375 in words is "sixty-six million, three hundred forty-eight thousand, three hundred seventy-five".