16597945 has 16 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 10505664.

The previous prime is 16597943. The next prime is 16597949. The reversal of 16597945 is 54979561.

It is not a de Polignac number, because 16597945 - 2¹ = 16597943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16597895 and 16597904.

It is not an unprimeable number, because it can be changed into a prime (16597943) 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, 17785 + ... + 18694.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^16597945 is an apocalyptic number.

It is an amenable number.

16597945 is a deficient number, since it is larger than the sum of its proper divisors (7916615).

16597945 is a wasteful number, since it uses less digits than its factorization.

16597945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36504.

The product of its digits is 340200, while the sum is 46.

The square root of 16597945 is about 4074.0575597308. The cubic root of 16597945 is about 255.0849134103.

It can be divided in two parts, 1659 and 7945, that added together give a square (9604 = 98²).

The spelling of 16597945 in words is "sixteen million, five hundred ninety-seven thousand, nine hundred forty-five".