65144652 has 12 divisors (see below), whose sum is σ = 152004216. Its totient is φ = 21714880.

The previous prime is 65144647. The next prime is 65144659. The reversal of 65144652 is 25644156.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×65144652² = 8487651368402208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65144659) 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, 2714349 + ... + 2714372.

It is an arithmetic number, because the mean of its divisors is an integer number (12667018).

Almost surely, 2^65144652 is an apocalyptic number.

It is an amenable number.

65144652 is an abundant number, since it is smaller than the sum of its proper divisors (86859564).

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

65144652 is a wasteful number, since it uses less digits than its factorization.

65144652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428728 (or 5428726 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 65144652 is about 8071.2236990434. The cubic root of 65144652 is about 402.3706143803.

The spelling of 65144652 in words is "sixty-five million, one hundred forty-four thousand, six hundred fifty-two".