13640470 has 8 divisors (see below), whose sum is σ = 24552864. Its totient is φ = 5456184.

The previous prime is 13640453. The next prime is 13640479. The reversal of 13640470 is 7404631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13640479) 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, 682014 + ... + 682033.

It is an arithmetic number, because the mean of its divisors is an integer number (3069108).

Almost surely, 2^13640470 is an apocalyptic number.

13640470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13640470 is a deficient number, since it is larger than the sum of its proper divisors (10912394).

13640470 is a wasteful number, since it uses less digits than its factorization.

13640470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364054.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 13640470 is about 3693.3006917932. The cubic root of 13640470 is about 238.9331699258.

The spelling of 13640470 in words is "thirteen million, six hundred forty thousand, four hundred seventy".