65349144 has 72 divisors (see below), whose sum is σ = 205894260. Its totient is φ = 18670176.

The previous prime is 65349133. The next prime is 65349157. The reversal of 65349144 is 44194356.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65349099 and 65349108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5734 + ... + 12789.

Almost surely, 2^65349144 is an apocalyptic number.

It is an amenable number.

65349144 is an abundant number, since it is smaller than the sum of its proper divisors (140545116).

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

65349144 is a wasteful number, since it uses less digits than its factorization.

65349144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18549 (or 18535 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 65349144 is about 8083.8817408470. The cubic root of 65349144 is about 402.7911944473.

The spelling of 65349144 in words is "sixty-five million, three hundred forty-nine thousand, one hundred forty-four".