66441371 has 4 divisors (see below), whose sum is σ = 66619872. Its totient is φ = 66262872.

The previous prime is 66441367. The next prime is 66441377. The reversal of 66441371 is 17314466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66441371 - 2² = 66441367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66441377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88691 + ... + 89436.

It is an arithmetic number, because the mean of its divisors is an integer number (16654968).

Almost surely, 2^66441371 is an apocalyptic number.

66441371 is a deficient number, since it is larger than the sum of its proper divisors (178501).

66441371 is a wasteful number, since it uses less digits than its factorization.

66441371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178500.

The product of its digits is 12096, while the sum is 32.

The square root of 66441371 is about 8151.1576478436. The cubic root of 66441371 is about 405.0228529502.

The spelling of 66441371 in words is "sixty-six million, four hundred forty-one thousand, three hundred seventy-one".