66948039 has 40 divisors (see below), whose sum is σ = 107941680. Its totient is φ = 41212800.

The previous prime is 66948031. The next prime is 66948041. The reversal of 66948039 is 93084966.

It is not a de Polignac number, because 66948039 - 2³ = 66948031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66947985 and 66948003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66948031) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62569 + ... + 63629.

It is an arithmetic number, because the mean of its divisors is an integer number (2698542).

Almost surely, 2^66948039 is an apocalyptic number.

66948039 is a deficient number, since it is larger than the sum of its proper divisors (40993641).

66948039 is a wasteful number, since it uses less digits than its factorization.

66948039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 66948039 is about 8182.1781329912. The cubic root of 66948039 is about 406.0497868200.

The spelling of 66948039 in words is "sixty-six million, nine hundred forty-eight thousand, thirty-nine".