65670055 has 16 divisors (see below), whose sum is σ = 86137344. Its totient is φ = 47666080.

The previous prime is 65670053. The next prime is 65670071. The reversal of 65670055 is 55007656.

It is not a de Polignac number, because 65670055 - 2¹ = 65670053 is a prime.

It is a super-2 number, since 2×65670055² = 8625112247406050, 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 65670055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65670053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40062 + ... + 41668.

It is an arithmetic number, because the mean of its divisors is an integer number (5383584).

Almost surely, 2^65670055 is an apocalyptic number.

65670055 is a deficient number, since it is larger than the sum of its proper divisors (20467289).

65670055 is a wasteful number, since it uses less digits than its factorization.

65670055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 65670055 is about 8103.7062508460. The cubic root of 65670055 is about 403.4494489958.

The spelling of 65670055 in words is "sixty-five million, six hundred seventy thousand, fifty-five".