1609672 has 8 divisors (see below), whose sum is σ = 3018150. Its totient is φ = 804832.

The previous prime is 1609669. The next prime is 1609691. The reversal of 1609672 is 2769061.

It can be written as a sum of positive squares in only one way, i.e., 1454436 + 155236 = 1206^2 + 394^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100597 + ... + 100612.

2^1609672 is an apocalyptic number.

It is an amenable number.

1609672 is a deficient number, since it is larger than the sum of its proper divisors (1408478).

1609672 is a wasteful number, since it uses less digits than its factorization.

1609672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201215 (or 201211 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1609672 is about 1268.7284973547. The cubic root of 1609672 is about 117.1959120598.

The spelling of 1609672 in words is "one million, six hundred nine thousand, six hundred seventy-two".