3638937 has 8 divisors (see below), whose sum is σ = 5107360. Its totient is φ = 2298240.

The previous prime is 3638923. The next prime is 3638941. The reversal of 3638937 is 7398363.

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

It is not a de Polignac number, because 3638937 - 2⁷ = 3638809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3638895 and 3638904.

It is not an unprimeable number, because it can be changed into a prime (3638917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31864 + ... + 31977.

It is an arithmetic number, because the mean of its divisors is an integer number (638420).

Almost surely, 2^3638937 is an apocalyptic number.

It is an amenable number.

3638937 is a deficient number, since it is larger than the sum of its proper divisors (1468423).

3638937 is a wasteful number, since it uses less digits than its factorization.

3638937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63863.

The product of its digits is 81648, while the sum is 39.

The square root of 3638937 is about 1907.5998007968. The cubic root of 3638937 is about 153.8124579344.

The spelling of 3638937 in words is "three million, six hundred thirty-eight thousand, nine hundred thirty-seven".