3783640 has 32 divisors (see below), whose sum is σ = 9730080. Its totient is φ = 1297152.

The previous prime is 3783631. The next prime is 3783649. The reversal of 3783640 is 463873.

It is an interprime number because it is at equal distance from previous prime (3783631) and next prime (3783649).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3783649) 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, 6477 + ... + 7036.

It is an arithmetic number, because the mean of its divisors is an integer number (304065).

Almost surely, 2^3783640 is an apocalyptic number.

It is an amenable number.

3783640 is an abundant number, since it is smaller than the sum of its proper divisors (5946440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3783640 is a wasteful number, since it uses less digits than its factorization.

3783640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13531 (or 13527 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 3783640 is about 1945.1580912615. The cubic root of 3783640 is about 155.8248088092.

The spelling of 3783640 in words is "three million, seven hundred eighty-three thousand, six hundred forty".