16630971 has 8 divisors (see below), whose sum is σ = 25342464. Its totient is φ = 9503400.

The previous prime is 16630967. The next prime is 16630987. The reversal of 16630971 is 17903661.

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

It is not a de Polignac number, because 16630971 - 2² = 16630967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16630921) 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, 395955 + ... + 395996.

It is an arithmetic number, because the mean of its divisors is an integer number (3167808).

Almost surely, 2^16630971 is an apocalyptic number.

16630971 is a deficient number, since it is larger than the sum of its proper divisors (8711493).

16630971 is an equidigital number, since it uses as much as digits as its factorization.

16630971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791961.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 16630971 is about 4078.1087528412. The cubic root of 16630971 is about 255.2539876134.

The spelling of 16630971 in words is "sixteen million, six hundred thirty thousand, nine hundred seventy-one".