13670550 has 72 divisors (see below), whose sum is σ = 38910456. Its totient is φ = 3429120.

The previous prime is 13670549. The next prime is 13670551. The reversal of 13670550 is 5507631.

It is an interprime number because it is at equal distance from previous prime (13670549) and next prime (13670551).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6757 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (540423).

Almost surely, 2^13670550 is an apocalyptic number.

13670550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13670550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19455228).

13670550 is an abundant number, since it is smaller than the sum of its proper divisors (25239906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13670550 is a wasteful number, since it uses less digits than its factorization.

13670550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 13670550 is about 3697.3706873939. The cubic root of 13670550 is about 239.1086729987.

The spelling of 13670550 in words is "thirteen million, six hundred seventy thousand, five hundred fifty".