3472721646 has 16 divisors (see below), whose sum is σ = 6946203600. Its totient is φ = 1157447168.

The previous prime is 3472721633. The next prime is 3472721653. The reversal of 3472721646 is 6461272743.

It is a junction number, because it is equal to n+sod(n) for n = 3472721598 and 3472721607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40270 + ... + 92558.

It is an arithmetic number, because the mean of its divisors is an integer number (434137725).

Almost surely, 2^3472721646 is an apocalyptic number.

3472721646 is an abundant number, since it is smaller than the sum of its proper divisors (3473481954).

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

3472721646 is a wasteful number, since it uses less digits than its factorization.

3472721646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63363.

The product of its digits is 338688, while the sum is 42.

The square root of 3472721646 is about 58929.8026977861. The cubic root of 3472721646 is about 1514.3397582714.

The spelling of 3472721646 in words is "three billion, four hundred seventy-two million, seven hundred twenty-one thousand, six hundred forty-six".