16662534 has 64 divisors (see below), whose sum is σ = 40697856. Its totient is φ = 4444704.

The previous prime is 16662517. The next prime is 16662551. The reversal of 16662534 is 43526661.

It is an interprime number because it is at equal distance from previous prime (16662517) and next prime (16662551).

It is a junction number, because it is equal to n+sod(n) for n = 16662495 and 16662504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45219 + ... + 45585.

It is an arithmetic number, because the mean of its divisors is an integer number (635904).

Almost surely, 2^16662534 is an apocalyptic number.

16662534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16662534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20348928).

16662534 is an abundant number, since it is smaller than the sum of its proper divisors (24035322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16662534 is a wasteful number, since it uses less digits than its factorization.

16662534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its digits is 25920, while the sum is 33.

The square root of 16662534 is about 4081.9767270282. The cubic root of 16662534 is about 255.4153630429.

The spelling of 16662534 in words is "sixteen million, six hundred sixty-two thousand, five hundred thirty-four".