66107320 has 32 divisors (see below), whose sum is σ = 149220720. Its totient is φ = 26357760.

The previous prime is 66107311. The next prime is 66107323. The reversal of 66107320 is 2370166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66107323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10744 + ... + 15736.

Almost surely, 2^66107320 is an apocalyptic number.

It is an amenable number.

66107320 is an abundant number, since it is smaller than the sum of its proper divisors (83113400).

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

66107320 is a wasteful number, since it uses less digits than its factorization.

66107320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335 (or 5331 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 66107320 is about 8130.6408111538. The cubic root of 66107320 is about 404.3429268167.

Adding to 66107320 its reverse (2370166), we get a palindrome (68477486).

The spelling of 66107320 in words is "sixty-six million, one hundred seven thousand, three hundred twenty".