65775137 has 4 divisors (see below), whose sum is σ = 67174656. Its totient is φ = 64375620.

The previous prime is 65775097. The next prime is 65775179. The reversal of 65775137 is 73157756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65775137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65775094 and 65775103.

It is not an unprimeable number, because it can be changed into a prime (65775197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699689 + ... + 699782.

It is an arithmetic number, because the mean of its divisors is an integer number (16793664).

Almost surely, 2^65775137 is an apocalyptic number.

It is an amenable number.

65775137 is a deficient number, since it is larger than the sum of its proper divisors (1399519).

65775137 is a wasteful number, since it uses less digits than its factorization.

65775137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399518.

The product of its digits is 154350, while the sum is 41.

The square root of 65775137 is about 8110.1872358164. The cubic root of 65775137 is about 403.6645276550.

The spelling of 65775137 in words is "sixty-five million, seven hundred seventy-five thousand, one hundred thirty-seven".