16666632 has 24 divisors (see below), whose sum is σ = 45138990. Its totient is φ = 5555520.

The previous prime is 16666631. The next prime is 16666669. The reversal of 16666632 is 23666661.

It can be written as a sum of positive squares in only one way, i.e., 13003236 + 3663396 = 3606^2 + 1914^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (16666631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115669 + ... + 115812.

Almost surely, 2^16666632 is an apocalyptic number.

16666632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16666632 is an abundant number, since it is smaller than the sum of its proper divisors (28472358).

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

16666632 is a wasteful number, since it uses less digits than its factorization.

16666632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231493 (or 231486 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 16666632 is about 4082.4786588542. The cubic root of 16666632 is about 255.4363003618.

The spelling of 16666632 in words is "sixteen million, six hundred sixty-six thousand, six hundred thirty-two".