3646216572 has 24 divisors (see below), whose sum is σ = 8688857856. Its totient is φ = 1189545648.

The previous prime is 3646216571. The next prime is 3646216577. The reversal of 3646216572 is 2756126463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646216571) 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, 3231898 + ... + 3233025.

It is an arithmetic number, because the mean of its divisors is an integer number (362035744).

Almost surely, 2^3646216572 is an apocalyptic number.

It is an amenable number.

3646216572 is an abundant number, since it is smaller than the sum of its proper divisors (5042641284).

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

3646216572 is a wasteful number, since it uses less digits than its factorization.

3646216572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464977 (or 6464975 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 3646216572 is about 60383.9098767213. The cubic root of 3646216572 is about 1539.1495517996.

The spelling of 3646216572 in words is "three billion, six hundred forty-six million, two hundred sixteen thousand, five hundred seventy-two".