3781606 has 8 divisors (see below), whose sum is σ = 5689800. Its totient is φ = 1885008.

The previous prime is 3781579. The next prime is 3781639. The reversal of 3781606 is 6061873.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2031 + ... + 3418.

It is an arithmetic number, because the mean of its divisors is an integer number (711225).

Almost surely, 2^3781606 is an apocalyptic number.

3781606 is a deficient number, since it is larger than the sum of its proper divisors (1908194).

3781606 is a wasteful number, since it uses less digits than its factorization.

3781606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5798.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3781606 is about 1944.6351842955. The cubic root of 3781606 is about 155.7968811635.

The spelling of 3781606 in words is "three million, seven hundred eighty-one thousand, six hundred six".