66714843 has 16 divisors (see below), whose sum is σ = 96749856. Its totient is φ = 40646400.

The previous prime is 66714841. The next prime is 66714847. The reversal of 66714843 is 34841766.

It is not a de Polignac number, because 66714843 - 2¹ = 66714841 is a prime.

It is a super-4 number, since 4×66714843⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (66714841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4530 + ... + 12407.

It is an arithmetic number, because the mean of its divisors is an integer number (6046866).

Almost surely, 2^66714843 is an apocalyptic number.

66714843 is a deficient number, since it is larger than the sum of its proper divisors (30035013).

66714843 is a wasteful number, since it uses less digits than its factorization.

66714843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17054.

The product of its digits is 96768, while the sum is 39.

The square root of 66714843 is about 8167.9154623441. The cubic root of 66714843 is about 405.5777822503.

The spelling of 66714843 in words is "sixty-six million, seven hundred fourteen thousand, eight hundred forty-three".