132644865 has 16 divisors (see below), whose sum is σ = 212510016. Its totient is φ = 70651200.

The previous prime is 132644851. The next prime is 132644879. The reversal of 132644865 is 568446231.

It is an interprime number because it is at equal distance from previous prime (132644851) and next prime (132644879).

It is not a de Polignac number, because 132644865 - 2⁶ = 132644801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6930 + ... + 17700.

It is an arithmetic number, because the mean of its divisors is an integer number (13281876).

It is a Proth number, since it is equal to 253 ⋅ 2¹⁹ + 1 and 253 < 2¹⁹.

Almost surely, 2^132644865 is an apocalyptic number.

132644865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

132644865 is a deficient number, since it is larger than the sum of its proper divisors (79865151).

132644865 is a wasteful number, since it uses less digits than its factorization.

132644865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11600.

The product of its digits is 138240, while the sum is 39.

The square root of 132644865 is about 11517.1552477163. The cubic root of 132644865 is about 509.9921375182.

The spelling of 132644865 in words is "one hundred thirty-two million, six hundred forty-four thousand, eight hundred sixty-five".