66300137 has 8 divisors (see below), whose sum is σ = 67164552. Its totient is φ = 65440000.

The previous prime is 66300131. The next prime is 66300149. The reversal of 66300137 is 73100366.

It can be written as a sum of positive squares in 4 ways, for example, as 29041321 + 37258816 = 5389^2 + 6104^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66300137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66300131) 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, 39683 + ... + 41319.

It is an arithmetic number, because the mean of its divisors is an integer number (8395569).

Almost surely, 2^66300137 is an apocalyptic number.

It is an amenable number.

66300137 is a deficient number, since it is larger than the sum of its proper divisors (864415).

66300137 is a wasteful number, since it uses less digits than its factorization.

66300137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 66300137 is about 8142.4896069937. The cubic root of 66300137 is about 404.7356645277.

The spelling of 66300137 in words is "sixty-six million, three hundred thousand, one hundred thirty-seven".