65133137 has 8 divisors (see below), whose sum is σ = 69741000. Its totient is φ = 60611584.

The previous prime is 65133097. The next prime is 65133143. The reversal of 65133137 is 73133156.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21520321 + 43612816 = 4639^2 + 6604^2 .

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 65133137 - 2²⁴ = 48355921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65133157) 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, 20012 + ... + 23037.

It is an arithmetic number, because the mean of its divisors is an integer number (8717625).

Almost surely, 2^65133137 is an apocalyptic number.

It is an amenable number.

65133137 is a deficient number, since it is larger than the sum of its proper divisors (4607863).

65133137 is a wasteful number, since it uses less digits than its factorization.

65133137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43155.

The product of its digits is 5670, while the sum is 29.

The square root of 65133137 is about 8070.5103308279. The cubic root of 65133137 is about 402.3469052422.

The spelling of 65133137 in words is "sixty-five million, one hundred thirty-three thousand, one hundred thirty-seven".