13779650 has 12 divisors (see below), whose sum is σ = 25630242. Its totient is φ = 5511840.

The previous prime is 13779643. The next prime is 13779659. The reversal of 13779650 is 5697731.

It can be written as a sum of positive squares in 3 ways, for example, as 8392609 + 5387041 = 2897^2 + 2321^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13779659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137747 + ... + 137846.

Almost surely, 2^13779650 is an apocalyptic number.

13779650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13779650 is a deficient number, since it is larger than the sum of its proper divisors (11850592).

13779650 is a wasteful number, since it uses less digits than its factorization.

13779650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275605 (or 275600 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 13779650 is about 3712.0950957647. The cubic root of 13779650 is about 239.7430699512.

The spelling of 13779650 in words is "thirteen million, seven hundred seventy-nine thousand, six hundred fifty".