3784649 has 8 divisors (see below), whose sum is σ = 4172448. Its totient is φ = 3404160.

The previous prime is 3784643. The next prime is 3784657. The reversal of 3784649 is 9464873.

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

It is a cyclic number.

It is not a de Polignac number, because 3784649 - 2⁴ = 3784633 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 7² + 8⁷ + 4 + 6⁸ + 4⁵ + 9⁴ .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3784643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (521556).

Almost surely, 2^3784649 is an apocalyptic number.

It is an amenable number.

3784649 is a deficient number, since it is larger than the sum of its proper divisors (387799).

3784649 is a wasteful number, since it uses less digits than its factorization.

3784649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655.

The product of its digits is 145152, while the sum is 41.

The square root of 3784649 is about 1945.4174359247. The cubic root of 3784649 is about 155.8386590749.

The spelling of 3784649 in words is "three million, seven hundred eighty-four thousand, six hundred forty-nine".