66534313 has 8 divisors (see below), whose sum is σ = 67616640. Its totient is φ = 65456160.

The previous prime is 66534301. The next prime is 66534341. The reversal of 66534313 is 31343566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66534313 - 2²¹ = 64437161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66534383) 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, 50973 + ... + 52261.

It is an arithmetic number, because the mean of its divisors is an integer number (8452080).

Almost surely, 2^66534313 is an apocalyptic number.

It is an amenable number.

66534313 is a deficient number, since it is larger than the sum of its proper divisors (1082327).

66534313 is a wasteful number, since it uses less digits than its factorization.

66534313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087.

The product of its digits is 19440, while the sum is 31.

The square root of 66534313 is about 8156.8568088449. The cubic root of 66534313 is about 405.2116213554.

Adding to 66534313 its reverse (31343566), we get a palindrome (97877879).

The spelling of 66534313 in words is "sixty-six million, five hundred thirty-four thousand, three hundred thirteen".