16469685 has 24 divisors (see below), whose sum is σ = 30228120. Its totient is φ = 8266752.

The previous prime is 16469681. The next prime is 16469701. The reversal of 16469685 is 58696461.

It can be written as a sum of positive squares in 4 ways, for example, as 1306449 + 15163236 = 1143^2 + 3894^2 .

It is not a de Polignac number, because 16469685 - 2² = 16469681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16469685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16469681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10000 + ... + 11529.

It is an arithmetic number, because the mean of its divisors is an integer number (1259505).

Almost surely, 2^16469685 is an apocalyptic number.

16469685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16469685 is a deficient number, since it is larger than the sum of its proper divisors (13758435).

16469685 is a wasteful number, since it uses less digits than its factorization.

16469685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21557 (or 21554 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 16469685 is about 4058.2859682383. The cubic root of 16469685 is about 254.4261606093.

The spelling of 16469685 in words is "sixteen million, four hundred sixty-nine thousand, six hundred eighty-five".