65040144 has 40 divisors (see below), whose sum is σ = 180946752. Its totient is φ = 20012160.

The previous prime is 65040137. The next prime is 65040161. The reversal of 65040144 is 44104056.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51492 + ... + 52739.

Almost surely, 2^65040144 is an apocalyptic number.

It is an amenable number.

65040144 is an abundant number, since it is smaller than the sum of its proper divisors (115906608).

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

65040144 is a wasteful number, since it uses less digits than its factorization.

65040144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104255 (or 104249 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 65040144 is about 8064.7469892118. The cubic root of 65040144 is about 402.1553321654.

The spelling of 65040144 in words is "sixty-five million, forty thousand, one hundred forty-four".