6646000460 has 48 divisors (see below), whose sum is σ = 15257410560. Its totient is φ = 2411643840.

The previous prime is 6646000457. The next prime is 6646000463. The reversal of 6646000460 is 640006466.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6646000457) and next prime (6646000463).

It is a super-2 number, since 2×6646000460² = 88338644228640423200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6646000463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73847 + ... + 136913.

It is an arithmetic number, because the mean of its divisors is an integer number (317862720).

Almost surely, 2^6646000460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6646000460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7628705280).

6646000460 is an abundant number, since it is smaller than the sum of its proper divisors (8611410100).

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

6646000460 is a wasteful number, since it uses less digits than its factorization.

6646000460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63566 (or 63564 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 6646000460 is about 81523.0057100448. The cubic root of 6646000460 is about 1880.1252802435.

The spelling of 6646000460 in words is "six billion, six hundred forty-six million, four hundred sixty", and thus it is an aban number.