66130237 has 8 divisors (see below), whose sum is σ = 68529240. Its totient is φ = 63739200.

The previous prime is 66130213. The next prime is 66130243. The reversal of 66130237 is 73203166.

It can be written as a sum of positive squares in 4 ways, for example, as 44702596 + 21427641 = 6686^2 + 4629^2 .

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 66130237 - 2¹⁹ = 65605949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66130247) 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, 18703 + ... + 21955.

It is an arithmetic number, because the mean of its divisors is an integer number (8566155).

Almost surely, 2^66130237 is an apocalyptic number.

It is an amenable number.

66130237 is a deficient number, since it is larger than the sum of its proper divisors (2399003).

66130237 is a wasteful number, since it uses less digits than its factorization.

66130237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 66130237 is about 8132.0499875493. The cubic root of 66130237 is about 404.3896450737.

The spelling of 66130237 in words is "sixty-six million, one hundred thirty thousand, two hundred thirty-seven".