2406664646 has 4 divisors (see below), whose sum is σ = 3609996972. Its totient is φ = 1203332322.

The previous prime is 2406664643. The next prime is 2406664681. The reversal of 2406664646 is 6464666042.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2406664597 and 2406664606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2406664643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601666160 + ... + 601666163.

It is an arithmetic number, because the mean of its divisors is an integer number (902499243).

Almost surely, 2^2406664646 is an apocalyptic number.

2406664646 is a deficient number, since it is larger than the sum of its proper divisors (1203332326).

2406664646 is a wasteful number, since it uses less digits than its factorization.

2406664646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203332325.

The product of its (nonzero) digits is 995328, while the sum is 44.

The square root of 2406664646 is about 49057.7684571975. The cubic root of 2406664646 is about 1340.1040696629.

The spelling of 2406664646 in words is "two billion, four hundred six million, six hundred sixty-four thousand, six hundred forty-six".