13655570 has 8 divisors (see below), whose sum is σ = 24580044. Its totient is φ = 5462224.

The previous prime is 13655569. The next prime is 13655591. The reversal of 13655570 is 7555631.

It can be written as a sum of positive squares in 2 ways, for example, as 13388281 + 267289 = 3659^2 + 517^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682769 + ... + 682788.

Almost surely, 2^13655570 is an apocalyptic number.

13655570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13655570 is a deficient number, since it is larger than the sum of its proper divisors (10924474).

13655570 is a wasteful number, since it uses less digits than its factorization.

13655570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365564.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 13655570 is about 3695.3443682558. The cubic root of 13655570 is about 239.0213037504.

It can be divided in two parts, 1365 and 5570, that multiplied together give a triangular number (7603050 = T₃₈₉₉).

The spelling of 13655570 in words is "thirteen million, six hundred fifty-five thousand, five hundred seventy".