447621646 has 16 divisors (see below), whose sum is σ = 707187600. Its totient is φ = 211906368.

The previous prime is 447621593. The next prime is 447621683. The reversal of 447621646 is 646126744.

It is a junction number, because it is equal to n+sod(n) for n = 447621599 and 447621608.

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, 110220 + ... + 114208.

It is an arithmetic number, because the mean of its divisors is an integer number (44199225).

Almost surely, 2^447621646 is an apocalyptic number.

447621646 is a deficient number, since it is larger than the sum of its proper divisors (259565954).

447621646 is a wasteful number, since it uses less digits than its factorization.

447621646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963.

The product of its digits is 193536, while the sum is 40.

The square root of 447621646 is about 21157.0708275035. The cubic root of 447621646 is about 764.9570061417.

The spelling of 447621646 in words is "four hundred forty-seven million, six hundred twenty-one thousand, six hundred forty-six".