6644260046 has 4 divisors (see below), whose sum is σ = 9966390072. Its totient is φ = 3322130022.

The previous prime is 6644260019. The next prime is 6644260061. The reversal of 6644260046 is 6400624466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6400624466 = 2 ⋅3200312233.

It is a junction number, because it is equal to n+sod(n) for n = 6644259991 and 6644260009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1661065010 + ... + 1661065013.

It is an arithmetic number, because the mean of its divisors is an integer number (2491597518).

Almost surely, 2^6644260046 is an apocalyptic number.

6644260046 is a deficient number, since it is larger than the sum of its proper divisors (3322130026).

6644260046 is a wasteful number, since it uses less digits than its factorization.

6644260046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322130025.

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 6644260046 is about 81512.3306377630. The cubic root of 6644260046 is about 1879.9611473410.

The spelling of 6644260046 in words is "six billion, six hundred forty-four million, two hundred sixty thousand, forty-six".