65520655 has 8 divisors (see below), whose sum is σ = 78955200. Its totient is φ = 52196256.

The previous prime is 65520647. The next prime is 65520709. The reversal of 65520655 is 55602556.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 65520655 - 2³ = 65520647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65520655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26220 + ... + 28609.

It is an arithmetic number, because the mean of its divisors is an integer number (9869400).

Almost surely, 2^65520655 is an apocalyptic number.

65520655 is a deficient number, since it is larger than the sum of its proper divisors (13434545).

65520655 is a wasteful number, since it uses less digits than its factorization.

65520655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55073.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 65520655 is about 8094.4829976966. The cubic root of 65520655 is about 403.1432662436.

The spelling of 65520655 in words is "sixty-five million, five hundred twenty thousand, six hundred fifty-five".