2649608646 has 8 divisors (see below), whose sum is σ = 5299217304. Its totient is φ = 883202880.

The previous prime is 2649608617. The next prime is 2649608651. The reversal of 2649608646 is 6468069462.

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

2649608646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220800715 + ... + 220800726.

It is an arithmetic number, because the mean of its divisors is an integer number (662402163).

Almost surely, 2^2649608646 is an apocalyptic number.

2649608646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2649608646 is a wasteful number, since it uses less digits than its factorization.

2649608646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441601446.

The product of its (nonzero) digits is 2985984, while the sum is 51.

The square root of 2649608646 is about 51474.3493985111. The cubic root of 2649608646 is about 1383.7593787274.

The spelling of 2649608646 in words is "two billion, six hundred forty-nine million, six hundred eight thousand, six hundred forty-six".