66001675 has 6 divisors (see below), whose sum is σ = 81842108. Its totient is φ = 52801320.

The previous prime is 66001669. The next prime is 66001681. The reversal of 66001675 is 57610066.

It is an interprime number because it is at equal distance from previous prime (66001669) and next prime (66001681).

It is not a de Polignac number, because 66001675 - 2⁷ = 66001547 is a prime.

It is a super-2 number, since 2×66001675² = 8712442205611250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1320009 + ... + 1320058.

Almost surely, 2^66001675 is an apocalyptic number.

66001675 is a deficient number, since it is larger than the sum of its proper divisors (15840433).

66001675 is a wasteful number, since it uses less digits than its factorization.

66001675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640077 (or 2640072 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 66001675 is about 8124.1414931056. The cubic root of 66001675 is about 404.1274207591.

The spelling of 66001675 in words is "sixty-six million, one thousand, six hundred seventy-five".