66938346 has 16 divisors (see below), whose sum is σ = 148752000. Its totient is φ = 22312764.

The previous prime is 66938341. The next prime is 66938353. The reversal of 66938346 is 64383966.

It is not an unprimeable number, because it can be changed into a prime (66938341) 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, 619746 + ... + 619853.

It is an arithmetic number, because the mean of its divisors is an integer number (9297000).

Almost surely, 2^66938346 is an apocalyptic number.

66938346 is an abundant number, since it is smaller than the sum of its proper divisors (81813654).

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

66938346 is a wasteful number, since it uses less digits than its factorization.

66938346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239610 (or 1239604 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 66938346 is about 8181.5857876087. The cubic root of 66938346 is about 406.0301893799.

The spelling of 66938346 in words is "sixty-six million, nine hundred thirty-eight thousand, three hundred forty-six".