16897707 has 16 divisors (see below), whose sum is σ = 26352000. Its totient is φ = 10671912.

The previous prime is 16897703. The next prime is 16897747. The reversal of 16897707 is 70779861.

It is a happy number.

It is not a de Polignac number, because 16897707 - 2² = 16897703 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16897703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15957 + ... + 16982.

It is an arithmetic number, because the mean of its divisors is an integer number (1647000).

Almost surely, 2^16897707 is an apocalyptic number.

16897707 is a deficient number, since it is larger than the sum of its proper divisors (9454293).

16897707 is a wasteful number, since it uses less digits than its factorization.

16897707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32967 (or 32961 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 16897707 is about 4110.6820601939. The cubic root of 16897707 is about 256.6113876192.

The spelling of 16897707 in words is "sixteen million, eight hundred ninety-seven thousand, seven hundred seven".