66863741 has 8 divisors (see below), whose sum is σ = 76885824. Its totient is φ = 56959200.

The previous prime is 66863711. The next prime is 66863779. The reversal of 66863741 is 14736866.

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 66863741 - 2⁶ = 66863677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66863711) 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, 28160 + ... + 30441.

It is an arithmetic number, because the mean of its divisors is an integer number (9610728).

Almost surely, 2^66863741 is an apocalyptic number.

It is an amenable number.

66863741 is a deficient number, since it is larger than the sum of its proper divisors (10022083).

66863741 is a wasteful number, since it uses less digits than its factorization.

66863741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58771.

The product of its digits is 145152, while the sum is 41.

The square root of 66863741 is about 8177.0251925746. The cubic root of 66863741 is about 405.8792886141.

The spelling of 66863741 in words is "sixty-six million, eight hundred sixty-three thousand, seven hundred forty-one".