66151841 has 12 divisors (see below), whose sum is σ = 79012416. Its totient is φ = 54151680.

The previous prime is 66151829. The next prime is 66151843. The reversal of 66151841 is 14815166.

It is a de Polignac number, because none of the positive numbers 2^k-66151841 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66151798 and 66151807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66151843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102881 + ... + 103521.

It is an arithmetic number, because the mean of its divisors is an integer number (6584368).

Almost surely, 2^66151841 is an apocalyptic number.

It is an amenable number.

66151841 is a deficient number, since it is larger than the sum of its proper divisors (12860575).

66151841 is an frugal number, since it uses more digits than its factorization.

66151841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 671 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 66151841 is about 8133.3782034281. The cubic root of 66151841 is about 404.4336767859.

The spelling of 66151841 in words is "sixty-six million, one hundred fifty-one thousand, eight hundred forty-one".