66960336 has 80 divisors (see below), whose sum is σ = 179702784. Its totient is φ = 21470592.

The previous prime is 66960319. The next prime is 66960349. The reversal of 66960336 is 63306966.

It is a junction number, because it is equal to n+sod(n) for n = 66960294 and 66960303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150931 + ... + 151373.

Almost surely, 2^66960336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66960336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89851392).

66960336 is an abundant number, since it is smaller than the sum of its proper divisors (112742448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66960336 is a wasteful number, since it uses less digits than its factorization.

66960336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 39.

The square root of 66960336 is about 8182.9295487619. The cubic root of 66960336 is about 406.0746463410.

The spelling of 66960336 in words is "sixty-six million, nine hundred sixty thousand, three hundred thirty-six".