65440252 has 12 divisors (see below), whose sum is σ = 115161480. Its totient is φ = 32536976.

The previous prime is 65440247. The next prime is 65440253. The reversal of 65440252 is 25204456.

It is a self number, because there is not a number n which added to its sum of digits gives 65440252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440253) 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, 44983 + ... + 46414.

It is an arithmetic number, because the mean of its divisors is an integer number (9596790).

Almost surely, 2^65440252 is an apocalyptic number.

It is an amenable number.

65440252 is a deficient number, since it is larger than the sum of its proper divisors (49721228).

65440252 is a wasteful number, since it uses less digits than its factorization.

65440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91580 (or 91578 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 65440252 is about 8089.5149421952. The cubic root of 65440252 is about 402.9782943688.

The spelling of 65440252 in words is "sixty-five million, four hundred forty thousand, two hundred fifty-two".