16898970685 has 8 divisors (see below), whose sum is σ = 20285649720. Its totient is φ = 13514586624.

The previous prime is 16898970667. The next prime is 16898970689. The reversal of 16898970685 is 58607989861.

It can be written as a sum of positive squares in 4 ways, for example, as 6716949849 + 10182020836 = 81957^2 + 100906^2 .

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 16898970685 - 2²³ = 16890582077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16898970685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16898970689) 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, 557500 + ... + 587029.

It is an arithmetic number, because the mean of its divisors is an integer number (2535706215).

Almost surely, 2^16898970685 is an apocalyptic number.

It is an amenable number.

16898970685 is a deficient number, since it is larger than the sum of its proper divisors (3386679035).

16898970685 is a wasteful number, since it uses less digits than its factorization.

16898970685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147487.

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 16898970685 in words is "sixteen billion, eight hundred ninety-eight million, nine hundred seventy thousand, six hundred eighty-five".