13620503 has 8 divisors (see below), whose sum is σ = 14703696. Its totient is φ = 12542400.

The previous prime is 13620493. The next prime is 13620521. The reversal of 13620503 is 30502631.

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

It is not a de Polignac number, because 13620503 - 2²² = 9426199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13620533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5768 + ... + 7778.

It is an arithmetic number, because the mean of its divisors is an integer number (1837962).

Almost surely, 2^13620503 is an apocalyptic number.

13620503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13620503 is a deficient number, since it is larger than the sum of its proper divisors (1083193).

13620503 is a wasteful number, since it uses less digits than its factorization.

13620503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 13620503 is about 3690.5965642427. The cubic root of 13620503 is about 238.8165290688.

The spelling of 13620503 in words is "thirteen million, six hundred twenty thousand, five hundred three".