16970537 has 4 divisors (see below), whose sum is σ = 17126340. Its totient is φ = 16814736.

The previous prime is 16970507. The next prime is 16970549. The reversal of 16970537 is 73507961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73507961 = 179 ⋅410659.

It can be written as a sum of positive squares in 2 ways, for example, as 9916201 + 7054336 = 3149^2 + 2656^2 .

It is a cyclic number.

It is not a de Polignac number, because 16970537 - 2⁸ = 16970281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16970537.

It is not an unprimeable number, because it can be changed into a prime (16970507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77738 + ... + 77955.

It is an arithmetic number, because the mean of its divisors is an integer number (4281585).

Almost surely, 2^16970537 is an apocalyptic number.

It is an amenable number.

16970537 is a deficient number, since it is larger than the sum of its proper divisors (155803).

16970537 is a wasteful number, since it uses less digits than its factorization.

16970537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155802.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 16970537 is about 4119.5311626446. The cubic root of 16970537 is about 256.9795287181.

The spelling of 16970537 in words is "sixteen million, nine hundred seventy thousand, five hundred thirty-seven".