16172663 has 8 divisors (see below), whose sum is σ = 17887968. Its totient is φ = 14524704.

The previous prime is 16172647. The next prime is 16172693. The reversal of 16172663 is 36627161.

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 16172663 - 2⁴ = 16172647 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 (16172623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16331 + ... + 17292.

It is an arithmetic number, because the mean of its divisors is an integer number (2235996).

Almost surely, 2^16172663 is an apocalyptic number.

16172663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16172663 is a deficient number, since it is larger than the sum of its proper divisors (1715305).

16172663 is a wasteful number, since it uses less digits than its factorization.

16172663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33673.

The product of its digits is 9072, while the sum is 32.

The square root of 16172663 is about 4021.5249595147. The cubic root of 16172663 is about 252.8873927990.

The spelling of 16172663 in words is "sixteen million, one hundred seventy-two thousand, six hundred sixty-three".