13770145 has 8 divisors (see below), whose sum is σ = 16611840. Its totient is φ = 10957680.

The previous prime is 13770131. The next prime is 13770149. The reversal of 13770145 is 54107731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13770145 - 2¹³ = 13761953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13770149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6255 + ... + 8164.

It is an arithmetic number, because the mean of its divisors is an integer number (2076480).

Almost surely, 2^13770145 is an apocalyptic number.

It is an amenable number.

13770145 is a deficient number, since it is larger than the sum of its proper divisors (2841695).

13770145 is a wasteful number, since it uses less digits than its factorization.

13770145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14615.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 13770145 is about 3710.8146005965. The cubic root of 13770145 is about 239.6879335234.

Adding to 13770145 its reverse (54107731), we get a palindrome (67877876).

The spelling of 13770145 in words is "thirteen million, seven hundred seventy thousand, one hundred forty-five".