66970671 has 8 divisors (see below), whose sum is σ = 91472304. Its totient is φ = 43558080.

The previous prime is 66970637. The next prime is 66970699. The reversal of 66970671 is 17607966.

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

It is not a de Polignac number, because 66970671 - 2¹¹ = 66968623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66970601) 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, 272116 + ... + 272361.

It is an arithmetic number, because the mean of its divisors is an integer number (11434038).

Almost surely, 2^66970671 is an apocalyptic number.

66970671 is a deficient number, since it is larger than the sum of its proper divisors (24501633).

66970671 is a wasteful number, since it uses less digits than its factorization.

66970671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544521.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 66970671 is about 8183.5610219513. The cubic root of 66970671 is about 406.0955371440.

The spelling of 66970671 in words is "sixty-six million, nine hundred seventy thousand, six hundred seventy-one".