65144056 has 8 divisors (see below), whose sum is σ = 122145120. Its totient is φ = 32572024.

The previous prime is 65144047. The next prime is 65144059. The reversal of 65144056 is 65044156.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×65144056² = 8487496064262272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65144059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4071496 + ... + 4071511.

It is an arithmetic number, because the mean of its divisors is an integer number (15268140).

Almost surely, 2^65144056 is an apocalyptic number.

It is an amenable number.

65144056 is a deficient number, since it is larger than the sum of its proper divisors (57001064).

65144056 is a wasteful number, since it uses less digits than its factorization.

65144056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143013 (or 8143009 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 65144056 is about 8071.1867776678. The cubic root of 65144056 is about 402.3693872976.

The spelling of 65144056 in words is "sixty-five million, one hundred forty-four thousand, fifty-six".