3639682 has 4 divisors (see below), whose sum is σ = 5459526. Its totient is φ = 1819840.

The previous prime is 3639667. The next prime is 3639689. The reversal of 3639682 is 2869363.

It is a happy number.

3639682 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2869363 = 7 ⋅409909.

It can be written as a sum of positive squares in only one way, i.e., 2099601 + 1540081 = 1449^2 + 1241^2 .

It is a super-2 number, since 2×3639682² = 26494570122248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3639689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909919 + ... + 909922.

Almost surely, 2^3639682 is an apocalyptic number.

3639682 is a deficient number, since it is larger than the sum of its proper divisors (1819844).

3639682 is a wasteful number, since it uses less digits than its factorization.

3639682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819843.

The product of its digits is 46656, while the sum is 37.

The square root of 3639682 is about 1907.7950623691. The cubic root of 3639682 is about 153.8229538991.

The spelling of 3639682 in words is "three million, six hundred thirty-nine thousand, six hundred eighty-two".