3681562 has 4 divisors (see below), whose sum is σ = 5522346. Its totient is φ = 1840780.

The previous prime is 3681553. The next prime is 3681569. The reversal of 3681562 is 2651863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2651863 = 379 ⋅6997.

It can be written as a sum of positive squares in only one way, i.e., 2719201 + 962361 = 1649^2 + 981^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3681569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920389 + ... + 920392.

Almost surely, 2^3681562 is an apocalyptic number.

3681562 is a deficient number, since it is larger than the sum of its proper divisors (1840784).

3681562 is a wasteful number, since it uses less digits than its factorization.

3681562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840783.

The product of its digits is 8640, while the sum is 31.

The square root of 3681562 is about 1918.7396905260. The cubic root of 3681562 is about 154.4106932825.

The spelling of 3681562 in words is "three million, six hundred eighty-one thousand, five hundred sixty-two".