3780681 has 8 divisors (see below), whose sum is σ = 5337504. Its totient is φ = 2372160.

The previous prime is 3780653. The next prime is 3780709. The reversal of 3780681 is 1860873.

It is an interprime number because it is at equal distance from previous prime (3780653) and next prime (3780709).

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

It is not a de Polignac number, because 3780681 - 2⁹ = 3780169 is a prime.

It is a super-2 number, since 2×3780681² = 28587097647522, which contains 22 as substring.

It is a Curzon number.

3780681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3780611) 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, 37015 + ... + 37116.

It is an arithmetic number, because the mean of its divisors is an integer number (667188).

Almost surely, 2^3780681 is an apocalyptic number.

It is an amenable number.

3780681 is a deficient number, since it is larger than the sum of its proper divisors (1556823).

3780681 is a wasteful number, since it uses less digits than its factorization.

3780681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74151.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 3780681 is about 1944.3973359373. The cubic root of 3780681 is about 155.7841772252.

The spelling of 3780681 in words is "three million, seven hundred eighty thousand, six hundred eighty-one".