65613650 has 24 divisors (see below), whose sum is σ = 128466480. Its totient is φ = 24863760.

The previous prime is 65613643. The next prime is 65613677. The reversal of 65613650 is 5631656.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33584 + ... + 35483.

It is an arithmetic number, because the mean of its divisors is an integer number (5352770).

Almost surely, 2^65613650 is an apocalyptic number.

65613650 is a deficient number, since it is larger than the sum of its proper divisors (62852830).

65613650 is a wasteful number, since it uses less digits than its factorization.

65613650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69098 (or 69093 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 65613650 is about 8100.2253055085. The cubic root of 65613650 is about 403.3339063049. Note that the first 3 decimals are identical.

The spelling of 65613650 in words is "sixty-five million, six hundred thirteen thousand, six hundred fifty".