65808953 has 4 divisors (see below), whose sum is σ = 75210240. Its totient is φ = 56407668.

The previous prime is 65808949. The next prime is 65808983. The reversal of 65808953 is 35980856.

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 not a de Polignac number, because 65808953 - 2² = 65808949 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65808983) 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, 4700633 + ... + 4700646.

It is an arithmetic number, because the mean of its divisors is an integer number (18802560).

Almost surely, 2^65808953 is an apocalyptic number.

It is an amenable number.

65808953 is a deficient number, since it is larger than the sum of its proper divisors (9401287).

65808953 is an equidigital number, since it uses as much as digits as its factorization.

65808953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9401286.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 65808953 is about 8112.2717533377. The cubic root of 65808953 is about 403.7336924979.

The spelling of 65808953 in words is "sixty-five million, eight hundred eight thousand, nine hundred fifty-three".