66670535 has 8 divisors (see below), whose sum is σ = 81101040. Its totient is φ = 52605504.

The previous prime is 66670529. The next prime is 66670547. The reversal of 66670535 is 53507666.

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 66670535 - 2¹⁶ = 66604999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90965 + ... + 91694.

It is an arithmetic number, because the mean of its divisors is an integer number (10137630).

Almost surely, 2^66670535 is an apocalyptic number.

66670535 is a deficient number, since it is larger than the sum of its proper divisors (14430505).

66670535 is a wasteful number, since it uses less digits than its factorization.

66670535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182737.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 66670535 is about 8165.2026919116. The cubic root of 66670535 is about 405.4879755481.

The spelling of 66670535 in words is "sixty-six million, six hundred seventy thousand, five hundred thirty-five".