2644406630 has 8 divisors (see below), whose sum is σ = 4759931952. Its totient is φ = 1057762648.

The previous prime is 2644406621. The next prime is 2644406683. The reversal of 2644406630 is 366044462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132220322 + ... + 132220341.

It is an arithmetic number, because the mean of its divisors is an integer number (594991494).

Almost surely, 2^2644406630 is an apocalyptic number.

2644406630 is a deficient number, since it is larger than the sum of its proper divisors (2115525322).

2644406630 is a wasteful number, since it uses less digits than its factorization.

2644406630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264440670.

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 2644406630 is about 51423.7943952019. The cubic root of 2644406630 is about 1382.8532003184.

The spelling of 2644406630 in words is "two billion, six hundred forty-four million, four hundred six thousand, six hundred thirty".