13065890 has 8 divisors (see below), whose sum is σ = 23518620. Its totient is φ = 5226352.

The previous prime is 13065883. The next prime is 13065919. The reversal of 13065890 is 9856031.

It can be written as a sum of positive squares in 2 ways, for example, as 13039321 + 26569 = 3611^2 + 163^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653285 + ... + 653304.

Almost surely, 2^13065890 is an apocalyptic number.

13065890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13065890 is a deficient number, since it is larger than the sum of its proper divisors (10452730).

13065890 is a wasteful number, since it uses less digits than its factorization.

13065890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306596.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 13065890 is about 3614.6770256829. The cubic root of 13065890 is about 235.5300544793.

The spelling of 13065890 in words is "thirteen million, sixty-five thousand, eight hundred ninety".