65145244 has 12 divisors (see below), whose sum is σ = 114088464. Its totient is φ = 32548544.

The previous prime is 65145221. The next prime is 65145251. The reversal of 65145244 is 44254156.

It is a happy number.

It is a super-4 number, since 4×65145244⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969 + ... + 11455.

It is an arithmetic number, because the mean of its divisors is an integer number (9507372).

Almost surely, 2^65145244 is an apocalyptic number.

It is an amenable number.

65145244 is a deficient number, since it is larger than the sum of its proper divisors (48943220).

65145244 is a wasteful number, since it uses less digits than its factorization.

65145244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12044 (or 12042 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 65145244 is about 8071.2603724573. The cubic root of 65145244 is about 402.3718332201.

The spelling of 65145244 in words is "sixty-five million, one hundred forty-five thousand, two hundred forty-four".