246606640 has 80 divisors (see below), whose sum is σ = 657457920. Its totient is φ = 84268800.

The previous prime is 246606623. The next prime is 246606649. The reversal of 246606640 is 46606642.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 246606596 and 246606605.

It is not an unprimeable number, because it can be changed into a prime (246606649) 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, 234115 + ... + 235165.

It is an arithmetic number, because the mean of its divisors is an integer number (8218224).

Almost surely, 2^246606640 is an apocalyptic number.

246606640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 246606640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328728960).

246606640 is an abundant number, since it is smaller than the sum of its proper divisors (410851280).

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

246606640 is a wasteful number, since it uses less digits than its factorization.

246606640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 246606640 is about 15703.7142103389. The cubic root of 246606640 is about 627.0972871465.

The spelling of 246606640 in words is "two hundred forty-six million, six hundred six thousand, six hundred forty".