2949665664 has 64 divisors (see below), whose sum is σ = 8547338880. Its totient is φ = 893836800.

The previous prime is 2949665639. The next prime is 2949665731. The reversal of 2949665664 is 4665669492.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344932 + ... + 353379.

It is an arithmetic number, because the mean of its divisors is an integer number (133552170).

Almost surely, 2^2949665664 is an apocalyptic number.

2949665664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2949665664 is an abundant number, since it is smaller than the sum of its proper divisors (5597673216).

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

2949665664 is a wasteful number, since it uses less digits than its factorization.

2949665664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698339 (or 698327 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 57.

The square root of 2949665664 is about 54310.8245564363. The cubic root of 2949665664 is about 1434.1379589460.

The spelling of 2949665664 in words is "two billion, nine hundred forty-nine million, six hundred sixty-five thousand, six hundred sixty-four".