66737141 has 4 divisors (see below), whose sum is σ = 68889984. Its totient is φ = 64584300.

The previous prime is 66737137. The next prime is 66737171. The reversal of 66737141 is 14173766.

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 66737141 - 2² = 66737137 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 (66737131) 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, 1076375 + ... + 1076436.

It is an arithmetic number, because the mean of its divisors is an integer number (17222496).

Almost surely, 2^66737141 is an apocalyptic number.

It is an amenable number.

66737141 is a deficient number, since it is larger than the sum of its proper divisors (2152843).

66737141 is a wasteful number, since it uses less digits than its factorization.

66737141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152842.

The product of its digits is 21168, while the sum is 35.

The square root of 66737141 is about 8169.2803232598. The cubic root of 66737141 is about 405.6229624313.

The spelling of 66737141 in words is "sixty-six million, seven hundred thirty-seven thousand, one hundred forty-one".