66926141 has 4 divisors (see below), whose sum is σ = 67186812. Its totient is φ = 66665472.

The previous prime is 66926129. The next prime is 66926147. The reversal of 66926141 is 14162966.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64866916 + 2059225 = 8054^2 + 1435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66926141 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 (66926147) 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, 129950 + ... + 130463.

It is an arithmetic number, because the mean of its divisors is an integer number (16796703).

Almost surely, 2^66926141 is an apocalyptic number.

It is an amenable number.

66926141 is a deficient number, since it is larger than the sum of its proper divisors (260671).

66926141 is a wasteful number, since it uses less digits than its factorization.

66926141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260670.

The product of its digits is 15552, while the sum is 35.

The square root of 66926141 is about 8180.8398713091. The cubic root of 66926141 is about 406.0055104528.

The spelling of 66926141 in words is "sixty-six million, nine hundred twenty-six thousand, one hundred forty-one".