3647720166487 has 8 divisors (see below), whose sum is σ = 3650100246000. Its totient is φ = 3645340320384.

The previous prime is 3647720166479. The next prime is 3647720166491. The reversal of 3647720166487 is 7846610277463.

It is a happy number.

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 3647720166487 - 2³ = 3647720166479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3647720166457) 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, 40044189 + ... + 40135177.

It is an arithmetic number, because the mean of its divisors is an integer number (456262530750).

Almost surely, 2^{3647720166487} is an apocalyptic number.

3647720166487 is a deficient number, since it is larger than the sum of its proper divisors (2380079513).

3647720166487 is a wasteful number, since it uses less digits than its factorization.

3647720166487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116705.

The product of its (nonzero) digits is 56899584, while the sum is 61.

The spelling of 3647720166487 in words is "three trillion, six hundred forty-seven billion, seven hundred twenty million, one hundred sixty-six thousand, four hundred eighty-seven".