66260375 has 16 divisors (see below), whose sum is σ = 83442528. Its totient is φ = 52528000.

The previous prime is 66260351. The next prime is 66260399. The reversal of 66260375 is 57306266.

It is an interprime number because it is at equal distance from previous prime (66260351) and next prime (66260399).

It is not a de Polignac number, because 66260375 - 2¹² = 66256279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11780 + ... + 16470.

It is an arithmetic number, because the mean of its divisors is an integer number (5215158).

Almost surely, 2^66260375 is an apocalyptic number.

66260375 is a deficient number, since it is larger than the sum of its proper divisors (17182153).

66260375 is a wasteful number, since it uses less digits than its factorization.

66260375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819 (or 4809 counting only the distinct ones).

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

The square root of 66260375 is about 8140.0476042834. The cubic root of 66260375 is about 404.6547380096.

The spelling of 66260375 in words is "sixty-six million, two hundred sixty thousand, three hundred seventy-five".