3642659 has 4 divisors (see below), whose sum is σ = 3727416. Its totient is φ = 3557904.

The previous prime is 3642649. The next prime is 3642673. The reversal of 3642659 is 9562463.

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

It is a cyclic number.

It is not a de Polignac number, because 3642659 - 2⁴ = 3642643 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁸ + 6⁴ + 4 + 2¹¹ + 6⁸ + 5⁹ + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3642619) 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, 42314 + ... + 42399.

It is an arithmetic number, because the mean of its divisors is an integer number (931854).

Almost surely, 2^3642659 is an apocalyptic number.

3642659 is a deficient number, since it is larger than the sum of its proper divisors (84757).

3642659 is an equidigital number, since it uses as much as digits as its factorization.

3642659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84756.

The product of its digits is 38880, while the sum is 35.

The square root of 3642659 is about 1908.5751229648. The cubic root of 3642659 is about 153.8648812010.

The spelling of 3642659 in words is "three million, six hundred forty-two thousand, six hundred fifty-nine".