65655513 has 48 divisors (see below), whose sum is σ = 125214336. Its totient is φ = 32094720.

The previous prime is 65655503. The next prime is 65655559. The reversal of 65655513 is 31555656.

It is not a de Polignac number, because 65655513 - 2⁵ = 65655481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65655503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8995 + ... + 14567.

It is an arithmetic number, because the mean of its divisors is an integer number (2608632).

Almost surely, 2^65655513 is an apocalyptic number.

65655513 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

65655513 is a deficient number, since it is larger than the sum of its proper divisors (59558823).

65655513 is a wasteful number, since it uses less digits than its factorization.

65655513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614 (or 5611 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 65655513 is about 8102.8089573925. The cubic root of 65655513 is about 403.4196668016.

It can be divided in two parts, 656 and 55513, that added together give a square (56169 = 237²).

The spelling of 65655513 in words is "sixty-five million, six hundred fifty-five thousand, five hundred thirteen".