16245765 has 28 divisors (see below), whose sum is σ = 29235564. Its totient is φ = 8662464.

The previous prime is 16245739. The next prime is 16245769. The reversal of 16245765 is 56754261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8661249 + 7584516 = 2943^2 + 2754^2 .

It is not a de Polignac number, because 16245765 - 2¹² = 16241669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16245769) 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 27 ways as a sum of consecutive naturals, for example, 1417 + ... + 5873.

Almost surely, 2^16245765 is an apocalyptic number.

16245765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16245765 is a deficient number, since it is larger than the sum of its proper divisors (12989799).

16245765 is an frugal number, since it uses more digits than its factorization.

16245765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480 (or 4465 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 16245765 is about 4030.6035528194. The cubic root of 16245765 is about 253.2678452993.

The spelling of 16245765 in words is "sixteen million, two hundred forty-five thousand, seven hundred sixty-five".