65630555 has 8 divisors (see below), whose sum is σ = 78921312. Its totient is φ = 52394688.

The previous prime is 65630533. The next prime is 65630561. The reversal of 65630555 is 55503656.

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 65630555 - 2¹² = 65626459 is a prime.

It is a Duffinian 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, 11042 + ... + 15911.

It is an arithmetic number, because the mean of its divisors is an integer number (9865164).

Almost surely, 2^65630555 is an apocalyptic number.

65630555 is a deficient number, since it is larger than the sum of its proper divisors (13290757).

65630555 is a wasteful number, since it uses less digits than its factorization.

65630555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27445.

The product of its (nonzero) digits is 67500, while the sum is 35.

The square root of 65630555 is about 8101.2687277981. The cubic root of 65630555 is about 403.3685422595.

The spelling of 65630555 in words is "sixty-five million, six hundred thirty thousand, five hundred fifty-five".