13604620402 has 8 divisors (see below), whose sum is σ = 20412200412. Its totient is φ = 6800553600.

The previous prime is 13604620361. The next prime is 13604620409. The reversal of 13604620402 is 20402640631.

It can be written as a sum of positive squares in 2 ways, for example, as 13420990801 + 183629601 = 115849^2 + 13551^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13604620409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868599 + ... + 884122.

Almost surely, 2^13604620402 is an apocalyptic number.

13604620402 is a deficient number, since it is larger than the sum of its proper divisors (6807580010).

13604620402 is a wasteful number, since it uses less digits than its factorization.

13604620402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756604.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 13604620402 in words is "thirteen billion, six hundred four million, six hundred twenty thousand, four hundred two".