65640153 has 16 divisors (see below), whose sum is σ = 90003456. Its totient is φ = 42531600.

The previous prime is 65640151. The next prime is 65640173. The reversal of 65640153 is 35104656.

It is not a de Polignac number, because 65640153 - 2¹ = 65640151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65640153.

It is not an unprimeable number, because it can be changed into a prime (65640151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19750 + ... + 22832.

It is an arithmetic number, because the mean of its divisors is an integer number (5625216).

Almost surely, 2^65640153 is an apocalyptic number.

It is an amenable number.

65640153 is a deficient number, since it is larger than the sum of its proper divisors (24363303).

65640153 is a wasteful number, since it uses less digits than its factorization.

65640153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 65640153 is about 8101.8610824921. The cubic root of 65640153 is about 403.3882045573.

The spelling of 65640153 in words is "sixty-five million, six hundred forty thousand, one hundred fifty-three".