65072187 has 8 divisors (see below), whose sum is σ = 96403280. Its totient is φ = 43381440.

The previous prime is 65072167. The next prime is 65072197. The reversal of 65072187 is 78127056.

It is not a de Polignac number, because 65072187 - 2¹¹ = 65070139 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65072167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1205014 + ... + 1205067.

It is an arithmetic number, because the mean of its divisors is an integer number (12050410).

Almost surely, 2^65072187 is an apocalyptic number.

65072187 is a deficient number, since it is larger than the sum of its proper divisors (31331093).

65072187 is a wasteful number, since it uses less digits than its factorization.

65072187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410090 (or 2410084 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 65072187 is about 8066.7333537188. The cubic root of 65072187 is about 402.2213639364.

The spelling of 65072187 in words is "sixty-five million, seventy-two thousand, one hundred eighty-seven".