13785407 has 2 divisors, whose sum is σ = 13785408. Its totient is φ = 13785406.

The previous prime is 13785403. The next prime is 13785427. The reversal of 13785407 is 70458731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13785407 - 2² = 13785403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13785403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6892703 + 6892704.

It is an arithmetic number, because the mean of its divisors is an integer number (6892704).

Almost surely, 2^13785407 is an apocalyptic number.

13785407 is a deficient number, since it is larger than the sum of its proper divisors (1).

13785407 is an equidigital number, since it uses as much as digits as its factorization.

13785407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 13785407 is about 3712.8704528976. The cubic root of 13785407 is about 239.7764527218.

The spelling of 13785407 in words is "thirteen million, seven hundred eighty-five thousand, four hundred seven".