65489952 has 48 divisors (see below), whose sum is σ = 187542432. Its totient is φ = 19845120.

The previous prime is 65489911. The next prime is 65489953. The reversal of 65489952 is 25998456.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is not an unprimeable number, because it can be changed into a prime (65489953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29953 + ... + 32064.

It is an arithmetic number, because the mean of its divisors is an integer number (3907134).

Almost surely, 2^65489952 is an apocalyptic number.

It is an amenable number.

65489952 is an abundant number, since it is smaller than the sum of its proper divisors (122052480).

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

65489952 is a wasteful number, since it uses less digits than its factorization.

65489952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62041 (or 62033 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 65489952 is about 8092.5862367972. The cubic root of 65489952 is about 403.0802853836.

The spelling of 65489952 in words is "sixty-five million, four hundred eighty-nine thousand, nine hundred fifty-two".