66965043 has 16 divisors (see below), whose sum is σ = 90550656. Its totient is φ = 44016000.

The previous prime is 66965033. The next prime is 66965047. The reversal of 66965043 is 34056966.

It is a happy number.

It is not a de Polignac number, because 66965043 - 2⁵ = 66965011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66964992 and 66965010.

It is not an unprimeable number, because it can be changed into a prime (66965047) 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, 84696 + ... + 85482.

It is an arithmetic number, because the mean of its divisors is an integer number (5659416).

Almost surely, 2^66965043 is an apocalyptic number.

66965043 is a deficient number, since it is larger than the sum of its proper divisors (23585613).

66965043 is a wasteful number, since it uses less digits than its factorization.

66965043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 66965043 is about 8183.2171546403. The cubic root of 66965043 is about 406.0841611707.

The spelling of 66965043 in words is "sixty-six million, nine hundred sixty-five thousand, forty-three".