3649786 has 16 divisors (see below), whose sum is σ = 6586560. Its totient is φ = 1481760.

The previous prime is 3649777. The next prime is 3649831. The reversal of 3649786 is 6879463.

It is a happy number.

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, 6595 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (411660).

Almost surely, 2^3649786 is an apocalyptic number.

3649786 is a deficient number, since it is larger than the sum of its proper divisors (2936774).

3649786 is a wasteful number, since it uses less digits than its factorization.

3649786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13749.

The product of its digits is 217728, while the sum is 43.

The square root of 3649786 is about 1910.4413102736. The cubic root of 3649786 is about 153.9651633126.

The spelling of 3649786 in words is "three million, six hundred forty-nine thousand, seven hundred eighty-six".