66251341 has 16 divisors (see below), whose sum is σ = 75398400. Its totient is φ = 57774528.

The previous prime is 66251299. The next prime is 66251357. The reversal of 66251341 is 14315266.

It is a cyclic number.

It is not a de Polignac number, because 66251341 - 2⁹ = 66250829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66251441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15850 + ... + 19588.

It is an arithmetic number, because the mean of its divisors is an integer number (4712400).

Almost surely, 2^66251341 is an apocalyptic number.

It is an amenable number.

66251341 is a deficient number, since it is larger than the sum of its proper divisors (9147059).

66251341 is a wasteful number, since it uses less digits than its factorization.

66251341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828.

The product of its digits is 4320, while the sum is 28.

The square root of 66251341 is about 8139.4926746082. The cubic root of 66251341 is about 404.6363468416.

It can be divided in two parts, 662 and 51341, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 66251341 in words is "sixty-six million, two hundred fifty-one thousand, three hundred forty-one".