16631706 has 64 divisors (see below), whose sum is σ = 41545728. Its totient is φ = 4321728.

The previous prime is 16631689. The next prime is 16631723. The reversal of 16631706 is 60713661.

It is an interprime number because it is at equal distance from previous prime (16631689) and next prime (16631723).

It is a super-2 number, since 2×16631706² = 553227288940872, which contains 22 as substring.

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, 45135 + ... + 45501.

It is an arithmetic number, because the mean of its divisors is an integer number (649152).

Almost surely, 2^16631706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16631706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20772864).

16631706 is an abundant number, since it is smaller than the sum of its proper divisors (24914022).

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

16631706 is a wasteful number, since it uses less digits than its factorization.

16631706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 16631706 is about 4078.1988671471. The cubic root of 16631706 is about 255.2577478452.

The spelling of 16631706 in words is "sixteen million, six hundred thirty-one thousand, seven hundred six".