3685488221 has 8 divisors (see below), whose sum is σ = 3768336000. Its totient is φ = 3602825248.

The previous prime is 3685488211. The next prime is 3685488223. The reversal of 3685488221 is 1228845863.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685488221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685488223) 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, 5471 + ... + 86028.

It is an arithmetic number, because the mean of its divisors is an integer number (471042000).

Almost surely, 2^3685488221 is an apocalyptic number.

It is an amenable number.

3685488221 is a deficient number, since it is larger than the sum of its proper divisors (82847779).

3685488221 is an equidigital number, since it uses as much as digits as its factorization.

3685488221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92403.

The product of its digits is 737280, while the sum is 47.

The square root of 3685488221 is about 60708.2220214033. Note that the first 3 decimals coincide. The cubic root of 3685488221 is about 1544.6556447768.

The spelling of 3685488221 in words is "three billion, six hundred eighty-five million, four hundred eighty-eight thousand, two hundred twenty-one".