66968396 has 12 divisors (see below), whose sum is σ = 127848840. Its totient is φ = 30440160.

The previous prime is 66968381. The next prime is 66968399. The reversal of 66968396 is 69386966.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66968399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760961 + ... + 761048.

It is an arithmetic number, because the mean of its divisors is an integer number (10654070).

Almost surely, 2^66968396 is an apocalyptic number.

It is an amenable number.

66968396 is a deficient number, since it is larger than the sum of its proper divisors (60880444).

66968396 is a wasteful number, since it uses less digits than its factorization.

66968396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522024 (or 1522022 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 53.

The square root of 66968396 is about 8183.4220226015. The cubic root of 66968396 is about 406.0909387241.

The spelling of 66968396 in words is "sixty-six million, nine hundred sixty-eight thousand, three hundred ninety-six".