3680735581 has 8 divisors (see below), whose sum is σ = 3763105920. Its totient is φ = 3598534368.

The previous prime is 3680735551. The next prime is 3680735587. The reversal of 3680735581 is 1855370863.

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 3680735581 - 2⁷ = 3680735453 is a prime.

It is a super-2 number, since 2×3680735581² = 27095628834478815122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3680735587) 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, 2250 + ... + 85828.

It is an arithmetic number, because the mean of its divisors is an integer number (470388240).

Almost surely, 2^3680735581 is an apocalyptic number.

It is an amenable number.

3680735581 is a deficient number, since it is larger than the sum of its proper divisors (82370339).

3680735581 is an equidigital number, since it uses as much as digits as its factorization.

3680735581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84563.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 3680735581 is about 60669.0660963229. The cubic root of 3680735581 is about 1543.9913863259.

The spelling of 3680735581 in words is "three billion, six hundred eighty million, seven hundred thirty-five thousand, five hundred eighty-one".