65663137 has 4 divisors (see below), whose sum is σ = 68518080. Its totient is φ = 62808196.

The previous prime is 65663119. The next prime is 65663159. The reversal of 65663137 is 73136656.

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-65663137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65663096 and 65663105.

It is not an unprimeable number, because it can be changed into a prime (65663167) 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, 1427437 + ... + 1427482.

It is an arithmetic number, because the mean of its divisors is an integer number (17129520).

Almost surely, 2^65663137 is an apocalyptic number.

It is an amenable number.

65663137 is a deficient number, since it is larger than the sum of its proper divisors (2854943).

65663137 is a wasteful number, since it uses less digits than its factorization.

65663137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854942.

The product of its digits is 68040, while the sum is 37.

The square root of 65663137 is about 8103.2793978734. The cubic root of 65663137 is about 403.4352813954.

The spelling of 65663137 in words is "sixty-five million, six hundred sixty-three thousand, one hundred thirty-seven".