3215487339684 has 81 divisors (see below), whose sum is σ = 8440988016097. Its totient is φ = 1071732281616.

The previous prime is 3215487339667. The next prime is 3215487339689. The reversal of 3215487339684 is 4869337845123.

It is a happy number.

The square root of 3215487339684 is 1793178.

It is a perfect power (a square), and thus also a powerful number.

3215487339684 is a `hidden beast` number, since 3 + 2 + 1 + 548 + 7 + 3 + 3 + 9 + 6 + 84 = 666.

It can be written as a sum of positive squares in only one way, i.e., 299999389284 + 2915487950400 = 547722^2 + 1707480^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3215487339689) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 290489302 + ... + 290500370.

Almost surely, 2^{3215487339684} is an apocalyptic number.

3215487339684 is the 1793178-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3215487339684

3215487339684 is an abundant number, since it is smaller than the sum of its proper divisors (5225500676413).

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

3215487339684 is an frugal number, since it uses more digits than its factorization.

3215487339684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22166 (or 11074 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 63.

The spelling of 3215487339684 in words is "three trillion, two hundred fifteen billion, four hundred eighty-seven million, three hundred thirty-nine thousand, six hundred eighty-four".