66277141 has 4 divisors (see below), whose sum is σ = 75745312. Its totient is φ = 56808972.

The previous prime is 66277139. The next prime is 66277153. The reversal of 66277141 is 14177266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66277141 - 2¹ = 66277139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66277097 and 66277106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66277121) 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, 4734075 + ... + 4734088.

It is an arithmetic number, because the mean of its divisors is an integer number (18936328).

Almost surely, 2^66277141 is an apocalyptic number.

It is an amenable number.

66277141 is a deficient number, since it is larger than the sum of its proper divisors (9468171).

66277141 is an equidigital number, since it uses as much as digits as its factorization.

66277141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9468170.

The product of its digits is 14112, while the sum is 34.

The square root of 66277141 is about 8141.0773857027. The cubic root of 66277141 is about 404.6888653403.

The spelling of 66277141 in words is "sixty-six million, two hundred seventy-seven thousand, one hundred forty-one".