66737741 has 8 divisors (see below), whose sum is σ = 76487040. Its totient is φ = 57042288.

The previous prime is 66737711. The next prime is 66737771. The reversal of 66737741 is 14773766.

It is an interprime number because it is at equal distance from previous prime (66737711) and next prime (66737771).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66737741 - 2¹⁰ = 66736717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66737711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10766 + ... + 15791.

It is an arithmetic number, because the mean of its divisors is an integer number (9560880).

Almost surely, 2^66737741 is an apocalyptic number.

It is an amenable number.

66737741 is a deficient number, since it is larger than the sum of its proper divisors (9749299).

66737741 is a wasteful number, since it uses less digits than its factorization.

66737741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26923.

The product of its digits is 148176, while the sum is 41.

The square root of 66737741 is about 8169.3170461184. The cubic root of 66737741 is about 405.6241780115.

The spelling of 66737741 in words is "sixty-six million, seven hundred thirty-seven thousand, seven hundred forty-one".