146573969 has 4 divisors (see below), whose sum is σ = 147214260. Its totient is φ = 145933680.

The previous prime is 146573953. The next prime is 146574007. The reversal of 146573969 is 969375641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57988225 + 88585744 = 7615^2 + 9412^2 .

It is a cyclic number.

It is not a de Polignac number, because 146573969 - 2⁴ = 146573953 is a prime.

It is a super-2 number, since 2×146573969² = 42967856776825922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146573929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319802 + ... + 320259.

It is an arithmetic number, because the mean of its divisors is an integer number (36803565).

Almost surely, 2^146573969 is an apocalyptic number.

It is an amenable number.

146573969 is a deficient number, since it is larger than the sum of its proper divisors (640291).

146573969 is an equidigital number, since it uses as much as digits as its factorization.

146573969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640290.

The product of its digits is 1224720, while the sum is 50.

The square root of 146573969 is about 12106.7736825300. The cubic root of 146573969 is about 527.2528662744.

The spelling of 146573969 in words is "one hundred forty-six million, five hundred seventy-three thousand, nine hundred sixty-nine".