65213653 has 4 divisors (see below), whose sum is σ = 65229868. Its totient is φ = 65197440.

The previous prime is 65213651. The next prime is 65213699. The reversal of 65213653 is 35631256.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24980004 + 40233649 = 4998^2 + 6343^2 .

It is a cyclic number.

It is not a de Polignac number, because 65213653 - 2¹ = 65213651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65213651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2983 + ... + 11803.

It is an arithmetic number, because the mean of its divisors is an integer number (16307467).

Almost surely, 2^65213653 is an apocalyptic number.

It is an amenable number.

65213653 is a deficient number, since it is larger than the sum of its proper divisors (16215).

65213653 is an equidigital number, since it uses as much as digits as its factorization.

65213653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16214.

The product of its digits is 16200, while the sum is 31.

The square root of 65213653 is about 8075.4970744840. The cubic root of 65213653 is about 402.5126274603.

The spelling of 65213653 in words is "sixty-five million, two hundred thirteen thousand, six hundred fifty-three".