13770347 has 4 divisors (see below), whose sum is σ = 13925160. Its totient is φ = 13615536.

The previous prime is 13770343. The next prime is 13770349. The reversal of 13770347 is 74307731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74307731 = 17 ⋅4371043.

It is a cyclic number.

It is not a de Polignac number, because 13770347 - 2² = 13770343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13770343) 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 3 ways as a sum of consecutive naturals, for example, 77273 + ... + 77450.

It is an arithmetic number, because the mean of its divisors is an integer number (3481290).

Almost surely, 2^13770347 is an apocalyptic number.

13770347 is a deficient number, since it is larger than the sum of its proper divisors (154813).

13770347 is an equidigital number, since it uses as much as digits as its factorization.

13770347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154812.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 13770347 is about 3710.8418182402. The cubic root of 13770347 is about 239.6891055451.

The spelling of 13770347 in words is "thirteen million, seven hundred seventy thousand, three hundred forty-seven".