16697965 has 8 divisors (see below), whose sum is σ = 20077848. Its totient is φ = 13331520.

The previous prime is 16697951. The next prime is 16697969. The reversal of 16697965 is 56979661.

It can be written as a sum of positive squares in 4 ways, for example, as 100489 + 16597476 = 317^2 + 4074^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-16697965 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 (16697969) 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, 382 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (2509731).

Almost surely, 2^16697965 is an apocalyptic number.

It is an amenable number.

16697965 is a deficient number, since it is larger than the sum of its proper divisors (3379883).

16697965 is an equidigital number, since it uses as much as digits as its factorization.

16697965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6719.

The product of its digits is 612360, while the sum is 49.

The square root of 16697965 is about 4086.3143540359. The cubic root of 16697965 is about 255.5962722004.

It can be divided in two parts, 1 and 6697965, that added together give a palindrome (6697966).

The spelling of 16697965 in words is "sixteen million, six hundred ninety-seven thousand, nine hundred sixty-five".