13701645 has 12 divisors (see below), whose sum is σ = 23749596. Its totient is φ = 7307520.

The previous prime is 13701619. The next prime is 13701673. The reversal of 13701645 is 54610731.

13701645 is a `hidden beast` number, since 13 + 7 + 0 + 1 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4447881 + 9253764 = 2109^2 + 3042^2 .

It is not a de Polignac number, because 13701645 - 2⁷ = 13701517 is a prime.

It is a super-3 number, since 3×13701645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152196 + ... + 152285.

It is an arithmetic number, because the mean of its divisors is an integer number (1979133).

Almost surely, 2^13701645 is an apocalyptic number.

13701645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13701645 is a deficient number, since it is larger than the sum of its proper divisors (10047951).

13701645 is a wasteful number, since it uses less digits than its factorization.

13701645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304492 (or 304489 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 13701645 is about 3701.5733141463. The cubic root of 13701645 is about 239.2898277200.

The spelling of 13701645 in words is "thirteen million, seven hundred one thousand, six hundred forty-five".