12640095 has 96 divisors (see below), whose sum is σ = 26417664. Its totient is φ = 5529600.

The previous prime is 12640093. The next prime is 12640097. The reversal of 12640095 is 59004621.

12640095 is a `hidden beast` number, since 12 + 640 + 0 + 9 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (12640093) and next prime (12640097).

It is not a de Polignac number, because 12640095 - 2¹ = 12640093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640091) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 308275 + ... + 308315.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

It is a vampire number, since it can be written as 2091 ⋅ 6045 (with its own digits).

Almost surely, 2^12640095 is an apocalyptic number.

12640095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12640095 is an abundant number, since it is smaller than the sum of its proper divisors (13777569).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12640095 is a wasteful number, since it uses less digits than its factorization.

12640095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12640095 is about 3555.2911273200. The cubic root of 12640095 is about 232.9432404861.

The spelling of 12640095 in words is "twelve million, six hundred forty thousand, ninety-five".