13475997 has 32 divisors (see below), whose sum is σ = 21296000. Its totient is φ = 8398080.

The previous prime is 13475989. The next prime is 13476031. The reversal of 13475997 is 79957431.

13475997 is a `hidden beast` number, since 13 + 47 + 599 + 7 = 666.

13475997 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13475997 - 2³ = 13475989 is a prime.

It is a Duffinian number.

Its product of digits (238140) is a multiple of the sum of its prime factors (378).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13475927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55797 + ... + 56037.

It is an arithmetic number, because the mean of its divisors is an integer number (665500).

Almost surely, 2^13475997 is an apocalyptic number.

It is an amenable number.

13475997 is a deficient number, since it is larger than the sum of its proper divisors (7820003).

13475997 is a wasteful number, since it uses less digits than its factorization.

13475997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 372 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 13475997 is about 3670.9667663982. The cubic root of 13475997 is about 237.9689541219.

The spelling of 13475997 in words is "thirteen million, four hundred seventy-five thousand, nine hundred ninety-seven".