16971797 has 8 divisors (see below), whose sum is σ = 18006912. Its totient is φ = 15940800.

The previous prime is 16971791. The next prime is 16971811. The reversal of 16971797 is 79717961.

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 16971797 - 2⁴ = 16971781 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 (16971791) 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, 13172 + ... + 14402.

It is an arithmetic number, because the mean of its divisors is an integer number (2250864).

Almost surely, 2^16971797 is an apocalyptic number.

16971797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16971797 is a deficient number, since it is larger than the sum of its proper divisors (1035115).

16971797 is a wasteful number, since it uses less digits than its factorization.

16971797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059.

The product of its digits is 166698, while the sum is 47.

The square root of 16971797 is about 4119.6840898302. The cubic root of 16971797 is about 256.9858884892.

The spelling of 16971797 in words is "sixteen million, nine hundred seventy-one thousand, seven hundred ninety-seven".