66076541 has 2 divisors, whose sum is σ = 66076542. Its totient is φ = 66076540.

The previous prime is 66076511. The next prime is 66076573. The reversal of 66076541 is 14567066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36602500 + 29474041 = 6050^2 + 5429^2 .

It is a cyclic number.

It is not a de Polignac number, because 66076541 - 2¹⁰ = 66075517 is a prime.

It is a super-2 number, since 2×66076541² = 8732218541049362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66076511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33038270 + 33038271.

It is an arithmetic number, because the mean of its divisors is an integer number (33038271).

Almost surely, 2^66076541 is an apocalyptic number.

It is an amenable number.

66076541 is a deficient number, since it is larger than the sum of its proper divisors (1).

66076541 is an equidigital number, since it uses as much as digits as its factorization.

66076541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66076541 is about 8128.7478125478. The cubic root of 66076541 is about 404.2801642113.

The spelling of 66076541 in words is "sixty-six million, seventy-six thousand, five hundred forty-one".