3686402 has 4 divisors (see below), whose sum is σ = 5529606. Its totient is φ = 1843200.

The previous prime is 3686401. The next prime is 3686411. The reversal of 3686402 is 2046863.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3500641 + 185761 = 1871^2 + 431^2 .

It is not an unprimeable number, because it can be changed into a prime (3686401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921599 + ... + 921602.

Almost surely, 2^3686402 is an apocalyptic number.

3686402 is a deficient number, since it is larger than the sum of its proper divisors (1843204).

3686402 is a wasteful number, since it uses less digits than its factorization.

3686402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843203.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 3686402 is about 1920.0005208333. Note that the first 3 decimals coincide. The cubic root of 3686402 is about 154.4783294735.

The spelling of 3686402 in words is "three million, six hundred eighty-six thousand, four hundred two".