65652789 has 4 divisors (see below), whose sum is σ = 87537056. Its totient is φ = 43768524.

The previous prime is 65652757. The next prime is 65652859. The reversal of 65652789 is 98725656.

It is a happy number.

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 not a de Polignac number, because 65652789 - 2⁵ = 65652757 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65652709) 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, 10942129 + ... + 10942134.

It is an arithmetic number, because the mean of its divisors is an integer number (21884264).

Almost surely, 2^65652789 is an apocalyptic number.

It is an amenable number.

65652789 is a deficient number, since it is larger than the sum of its proper divisors (21884267).

65652789 is a wasteful number, since it uses less digits than its factorization.

65652789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21884266.

The product of its digits is 907200, while the sum is 48.

The square root of 65652789 is about 8102.6408657918. The cubic root of 65652789 is about 403.4140875272.

The spelling of 65652789 in words is "sixty-five million, six hundred fifty-two thousand, seven hundred eighty-nine".