1660972 has 12 divisors (see below), whose sum is σ = 2920456. Its totient is φ = 826560.

The previous prime is 1660963. The next prime is 1661003. The reversal of 1660972 is 2790661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103 + ... + 1825.

2^1660972 is an apocalyptic number.

It is an amenable number.

1660972 is a deficient number, since it is larger than the sum of its proper divisors (1259484).

1660972 is a wasteful number, since it uses less digits than its factorization.

1660972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 1966 counting only the distinct ones).

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

The square root of 1660972 is about 1288.7870266262. The cubic root of 1660972 is about 118.4279205824.

The spelling of 1660972 in words is "one million, six hundred sixty thousand, nine hundred seventy-two".