13900064 has 12 divisors (see below), whose sum is σ = 27365814. Its totient is φ = 6950016.

The previous prime is 13900063. The next prime is 13900079. The reversal of 13900064 is 46000931.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 795664 = 3620^2 + 892^2 .

It is not an unprimeable number, because it can be changed into a prime (13900063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217157 + ... + 217220.

Almost surely, 2^13900064 is an apocalyptic number.

It is an amenable number.

13900064 is a deficient number, since it is larger than the sum of its proper divisors (13465750).

13900064 is an equidigital number, since it uses as much as digits as its factorization.

13900064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434387 (or 434379 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13900064 is about 3728.2789595201. The cubic root of 13900064 is about 240.4393802983.

Adding to 13900064 its reverse (46000931), we get a palindrome (59900995).

The spelling of 13900064 in words is "thirteen million, nine hundred thousand, sixty-four".