945609 has 16 divisors (see below), whose sum is σ = 1481088. Its totient is φ = 525312.

The previous prime is 945601. The next prime is 945629. The reversal of 945609 is 906549.

It is a happy number.

It is not a de Polignac number, because 945609 - 2³ = 945601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 945609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169 + ... + 1385.

It is an arithmetic number, because the mean of its divisors is an integer number (92568).

2⁹⁴⁵⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

945609 is a deficient number, since it is larger than the sum of its proper divisors (535479).

945609 is a wasteful number, since it uses less digits than its factorization.

945609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 945609 is about 972.4242901121. The cubic root of 945609 is about 98.1530649840.

Subtracting from 945609 its reverse (906549), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 945609 in words is "nine hundred forty-five thousand, six hundred nine".