660414448 has 20 divisors (see below), whose sum is σ = 1323676440. Its totient is φ = 318820544.

The previous prime is 660414439. The next prime is 660414449. The reversal of 660414448 is 844414066.

It is a super-2 number, since 2×660414448² = 872294486254289408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660414449) 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, 711190 + ... + 712117.

It is an arithmetic number, because the mean of its divisors is an integer number (66183822).

Almost surely, 2^660414448 is an apocalyptic number.

It is an amenable number.

660414448 is an abundant number, since it is smaller than the sum of its proper divisors (663261992).

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

660414448 is a wasteful number, since it uses less digits than its factorization.

660414448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423344 (or 1423338 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 660414448 is about 25698.5300746949. The cubic root of 660414448 is about 870.8409748150.

The spelling of 660414448 in words is "six hundred sixty million, four hundred fourteen thousand, four hundred forty-eight".