66141407 has 12 divisors (see below), whose sum is σ = 71174880. Its totient is φ = 61441536.

The previous prime is 66141389. The next prime is 66141409. The reversal of 66141407 is 70414166.

It is not a de Polignac number, because 66141407 - 2²⁰ = 65092831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66141407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66141409) 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, 21383 + ... + 24279.

It is an arithmetic number, because the mean of its divisors is an integer number (5931240).

Almost surely, 2^66141407 is an apocalyptic number.

66141407 is a deficient number, since it is larger than the sum of its proper divisors (5033473).

66141407 is a wasteful number, since it uses less digits than its factorization.

66141407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 66141407 is about 8132.7367472457. The cubic root of 66141407 is about 404.4124121579.

The spelling of 66141407 in words is "sixty-six million, one hundred forty-one thousand, four hundred seven".