16745620 has 24 divisors (see below), whose sum is σ = 35396424. Its totient is φ = 6654336.

The previous prime is 16745609. The next prime is 16745627. The reversal of 16745620 is 2654761.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5035536 + 11710084 = 2244^2 + 3422^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16745627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474 + ... + 5806.

It is an arithmetic number, because the mean of its divisors is an integer number (1474851).

Almost surely, 2^16745620 is an apocalyptic number.

16745620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16745620 is an abundant number, since it is smaller than the sum of its proper divisors (18650804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16745620 is a wasteful number, since it uses less digits than its factorization.

16745620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5499 (or 5497 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 16745620 is about 4092.1412487841. The cubic root of 16745620 is about 255.8391934440.

The spelling of 16745620 in words is "sixteen million, seven hundred forty-five thousand, six hundred twenty".