1663045 has 8 divisors (see below), whose sum is σ = 2011680. Its totient is φ = 1319760.

The previous prime is 1663031. The next prime is 1663073. The reversal of 1663045 is 5403661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1663045 - 2¹³ = 1654853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615 + ... + 1924.

It is an arithmetic number, because the mean of its divisors is an integer number (251460).

2^1663045 is an apocalyptic number.

It is an amenable number.

1663045 is a deficient number, since it is larger than the sum of its proper divisors (348635).

1663045 is a wasteful number, since it uses less digits than its factorization.

1663045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1663045 is about 1289.5910204402. The cubic root of 1663045 is about 118.4771686565.

The spelling of 1663045 in words is "one million, six hundred sixty-three thousand, forty-five".