13645004 has 12 divisors (see below), whose sum is σ = 23906904. Its totient is φ = 6814464.

The previous prime is 13645001. The next prime is 13645013. The reversal of 13645004 is 40054631.

It is a happy number.

It is a super-2 number, since 2×13645004² = 372372268320032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13645001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3467 + ... + 6269.

It is an arithmetic number, because the mean of its divisors is an integer number (1992242).

Almost surely, 2^13645004 is an apocalyptic number.

It is an amenable number.

13645004 is a deficient number, since it is larger than the sum of its proper divisors (10261900).

13645004 is a wasteful number, since it uses less digits than its factorization.

13645004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024 (or 4022 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 13645004 is about 3693.9144548839. The cubic root of 13645004 is about 238.9596402499.

Adding to 13645004 its reverse (40054631), we get a palindrome (53699635).

The spelling of 13645004 in words is "thirteen million, six hundred forty-five thousand, four".