65669952 has 56 divisors (see below), whose sum is σ = 174682912. Its totient is φ = 21772800.

The previous prime is 65669941. The next prime is 65669953. The reversal of 65669952 is 25996656.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65669953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39702 + ... + 41322.

Almost surely, 2^65669952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65669952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87341456).

65669952 is an abundant number, since it is smaller than the sum of its proper divisors (109012960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65669952 is a wasteful number, since it uses less digits than its factorization.

65669952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847 (or 1837 counting only the distinct ones).

The product of its digits is 874800, while the sum is 48.

The square root of 65669952 is about 8103.6998957266. The cubic root of 65669952 is about 403.4492380660.

The spelling of 65669952 in words is "sixty-five million, six hundred sixty-nine thousand, nine hundred fifty-two".