146656665 has 12 divisors (see below), whose sum is σ = 254204964. Its totient is φ = 78216864.

The previous prime is 146656633. The next prime is 146656673. The reversal of 146656665 is 566656641.

It can be written as a sum of positive squares in 2 ways, for example, as 35712576 + 110944089 = 5976^2 + 10533^2 .

It is not a de Polignac number, because 146656665 - 2⁵ = 146656633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3259037 = 146656665 / (1 + 4 + 6 + 6 + 5 + 6 + 6 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 146656665.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1629474 + ... + 1629563.

It is an arithmetic number, because the mean of its divisors is an integer number (21183747).

Almost surely, 2^146656665 is an apocalyptic number.

146656665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

146656665 is a deficient number, since it is larger than the sum of its proper divisors (107548299).

146656665 is a wasteful number, since it uses less digits than its factorization.

146656665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259048 (or 3259045 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 146656665 is about 12110.1884791278. The cubic root of 146656665 is about 527.3520050823.

The spelling of 146656665 in words is "one hundred forty-six million, six hundred fifty-six thousand, six hundred sixty-five".