146632609 has 6 divisors (see below), whose sum is σ = 149454326. Its totient is φ = 143863200.

The previous prime is 146632601. The next prime is 146632637. The reversal of 146632609 is 906236641.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 77792400 + 68840209 = 8820^2 + 8297^2 .

It is not a de Polignac number, because 146632609 - 2³ = 146632601 is a prime.

It is a super-2 number, since 2×146632609² = 43002244044293762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146632601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23292 + ... + 28909.

Almost surely, 2^146632609 is an apocalyptic number.

It is an amenable number.

146632609 is a deficient number, since it is larger than the sum of its proper divisors (2821717).

146632609 is an frugal number, since it uses more digits than its factorization.

146632609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52307 (or 52254 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 146632609 is about 12109.1952251172. The cubic root of 146632609 is about 527.3231697670.

The spelling of 146632609 in words is "one hundred forty-six million, six hundred thirty-two thousand, six hundred nine".