66741571 has 8 divisors (see below), whose sum is σ = 72548784. Its totient is φ = 61030560.

The previous prime is 66741539. The next prime is 66741583. The reversal of 66741571 is 17514766.

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 66741571 - 2⁵ = 66741539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66741571.

It is not an unprimeable number, because it can be changed into a prime (66741511) 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, 22600 + ... + 25381.

It is an arithmetic number, because the mean of its divisors is an integer number (9068598).

Almost surely, 2^66741571 is an apocalyptic number.

66741571 is a deficient number, since it is larger than the sum of its proper divisors (5807213).

66741571 is a wasteful number, since it uses less digits than its factorization.

66741571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48101.

The product of its digits is 35280, while the sum is 37.

The square root of 66741571 is about 8169.5514564754. The cubic root of 66741571 is about 405.6319372937.

The spelling of 66741571 in words is "sixty-six million, seven hundred forty-one thousand, five hundred seventy-one".