65021313 has 8 divisors (see below), whose sum is σ = 99080128. Its totient is φ = 37155024.

The previous prime is 65021293. The next prime is 65021317. The reversal of 65021313 is 31312056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65021313 - 2¹³ = 65013121 is a prime.

It is a super-2 number, since 2×65021313² = 8455542288487938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 3096253 = 65021313 / (6 + 5 + 0 + 2 + 1 + 3 + 1 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 65021313.

It is not an unprimeable number, because it can be changed into a prime (65021317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548106 + ... + 1548147.

It is an arithmetic number, because the mean of its divisors is an integer number (12385016).

Almost surely, 2^65021313 is an apocalyptic number.

It is an amenable number.

65021313 is a deficient number, since it is larger than the sum of its proper divisors (34058815).

65021313 is a wasteful number, since it uses less digits than its factorization.

65021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096263.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 65021313 is about 8063.5794161154. The cubic root of 65021313 is about 402.1165165582.

Adding to 65021313 its reverse (31312056), we get a palindrome (96333369).

The spelling of 65021313 in words is "sixty-five million, twenty-one thousand, three hundred thirteen".