1663151 has 8 divisors (see below), whose sum is σ = 1933440. Its totient is φ = 1401048.

The previous prime is 1663147. The next prime is 1663157. The reversal of 1663151 is 1513661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1663151 - 2² = 1663147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601 + ... + 2426.

It is an arithmetic number, because the mean of its divisors is an integer number (241680).

2^1663151 is an apocalyptic number.

1663151 is a deficient number, since it is larger than the sum of its proper divisors (270289).

1663151 is an equidigital number, since it uses as much as digits as its factorization.

1663151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093.

The product of its digits is 540, while the sum is 23.

The square root of 1663151 is about 1289.6321180864. The cubic root of 1663151 is about 118.4796857888.

The spelling of 1663151 in words is "one million, six hundred sixty-three thousand, one hundred fifty-one".