65613355 has 4 divisors (see below), whose sum is σ = 78736032. Its totient is φ = 52490680.

The previous prime is 65613343. The next prime is 65613367. The reversal of 65613355 is 55331656.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (65613343) and next prime (65613367).

It is not a de Polignac number, because 65613355 - 2⁵ = 65613323 is a prime.

It is a super-2 number, since 2×65613355² = 8610224708712050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65613355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6561331 + ... + 6561340.

It is an arithmetic number, because the mean of its divisors is an integer number (19684008).

Almost surely, 2^65613355 is an apocalyptic number.

65613355 is a deficient number, since it is larger than the sum of its proper divisors (13122677).

65613355 is a wasteful number, since it uses less digits than its factorization.

65613355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122676.

The product of its digits is 40500, while the sum is 34.

The square root of 65613355 is about 8100.2070961180. The cubic root of 65613355 is about 403.3333018388. Note that the first 4 decimals are identical.

The spelling of 65613355 in words is "sixty-five million, six hundred thirteen thousand, three hundred fifty-five".