3780561 has 8 divisors (see below), whose sum is σ = 5063680. Its totient is φ = 2508912.

The previous prime is 3780559. The next prime is 3780583. The reversal of 3780561 is 1650873.

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

It is not a de Polignac number, because 3780561 - 2¹ = 3780559 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3780521) 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, 2065 + ... + 3438.

It is an arithmetic number, because the mean of its divisors is an integer number (632960).

Almost surely, 2^3780561 is an apocalyptic number.

It is an amenable number.

3780561 is a deficient number, since it is larger than the sum of its proper divisors (1283119).

3780561 is a wasteful number, since it uses less digits than its factorization.

3780561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 3780561 is about 1944.3664778020. The cubic root of 3780561 is about 155.7825289949.

The spelling of 3780561 in words is "three million, seven hundred eighty thousand, five hundred sixty-one".