662648444 has 12 divisors (see below), whose sum is σ = 1160766768. Its totient is φ = 331000800.

The previous prime is 662648431. The next prime is 662648449. The reversal of 662648444 is 444846266.

It is a super-2 number, since 2×662648444² = 878205920671242272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 662648395 and 662648404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662648449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76217 + ... + 84464.

It is an arithmetic number, because the mean of its divisors is an integer number (96730564).

Almost surely, 2^662648444 is an apocalyptic number.

It is an amenable number.

662648444 is a deficient number, since it is larger than the sum of its proper divisors (498118324).

662648444 is a wasteful number, since it uses less digits than its factorization.

662648444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161716 (or 161714 counting only the distinct ones).

The product of its digits is 884736, while the sum is 44.

The square root of 662648444 is about 25741.9588221254. The cubic root of 662648444 is about 871.8218062364.

The spelling of 662648444 in words is "six hundred sixty-two million, six hundred forty-eight thousand, four hundred forty-four".