3821658 has 16 divisors (see below), whose sum is σ = 7666176. Its totient is φ = 1270080.

The previous prime is 3821647. The next prime is 3821669. The reversal of 3821658 is 8561283.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3821647) and next prime (3821669).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863 + ... + 3333.

It is an arithmetic number, because the mean of its divisors is an integer number (479136).

Almost surely, 2^3821658 is an apocalyptic number.

3821658 is an abundant number, since it is smaller than the sum of its proper divisors (3844518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3821658 is a wasteful number, since it uses less digits than its factorization.

3821658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909.

The product of its digits is 11520, while the sum is 33.

The square root of 3821658 is about 1954.9061358541. The cubic root of 3821658 is about 156.3449794799.

The spelling of 3821658 in words is "three million, eight hundred twenty-one thousand, six hundred fifty-eight".