66313340 has 24 divisors (see below), whose sum is σ = 143751552. Its totient is φ = 25669440.

The previous prime is 66313339. The next prime is 66313349. The reversal of 66313340 is 4331366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66313349) 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, 52859 + ... + 54098.

It is an arithmetic number, because the mean of its divisors is an integer number (5989648).

Almost surely, 2^66313340 is an apocalyptic number.

It is an amenable number.

66313340 is an abundant number, since it is smaller than the sum of its proper divisors (77438212).

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

66313340 is a wasteful number, since it uses less digits than its factorization.

66313340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106997 (or 106995 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 66313340 is about 8143.3003137549. The cubic root of 66313340 is about 404.7625290791.

The spelling of 66313340 in words is "sixty-six million, three hundred thirteen thousand, three hundred forty".