65145744 has 30 divisors (see below), whose sum is σ = 182318006. Its totient is φ = 21715200.

The previous prime is 65145739. The next prime is 65145757. The reversal of 65145744 is 44754156.

It can be written as a sum of positive squares in only one way, i.e., 41990400 + 23155344 = 6480^2 + 4812^2 .

It is a super-2 number, since 2×65145744² = 8487935922627072, which contains 22 as substring.

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 = 65145699 and 65145708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226057 + ... + 226344.

Almost surely, 2^65145744 is an apocalyptic number.

It is an amenable number.

65145744 is an abundant number, since it is smaller than the sum of its proper divisors (117172262).

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

65145744 is a wasteful number, since it uses less digits than its factorization.

65145744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452415 (or 452406 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 65145744 is about 8071.2913464947. The cubic root of 65145744 is about 402.3728626398.

The spelling of 65145744 in words is "sixty-five million, one hundred forty-five thousand, seven hundred forty-four".