65440532 has 6 divisors (see below), whose sum is σ = 114520938. Its totient is φ = 32720264.

The previous prime is 65440517. The next prime is 65440547. The reversal of 65440532 is 23504456.

65440532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65440517) and next prime (65440547).

It can be written as a sum of positive squares in only one way, i.e., 40500496 + 24940036 = 6364^2 + 4994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65440495 and 65440504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8180063 + ... + 8180070.

It is an arithmetic number, because the mean of its divisors is an integer number (19086823).

Almost surely, 2^65440532 is an apocalyptic number.

It is an amenable number.

65440532 is a deficient number, since it is larger than the sum of its proper divisors (49080406).

65440532 is a wasteful number, since it uses less digits than its factorization.

65440532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16360137 (or 16360135 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 65440532 is about 8089.5322485296. The cubic root of 65440532 is about 402.9788691106.

Adding to 65440532 its reverse (23504456), we get a palindrome (88944988).

The spelling of 65440532 in words is "sixty-five million, four hundred forty thousand, five hundred thirty-two".