2664840993 has 8 divisors (see below), whose sum is σ = 3555845088. Its totient is φ = 1775198784.

The previous prime is 2664840989. The next prime is 2664841009. The reversal of 2664840993 is 3990484662.

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

It is not a de Polignac number, because 2664840993 - 2² = 2664840989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2664840923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335896 + ... + 343737.

It is an arithmetic number, because the mean of its divisors is an integer number (444480636).

Almost surely, 2^2664840993 is an apocalyptic number.

It is an amenable number.

2664840993 is a deficient number, since it is larger than the sum of its proper divisors (891004095).

2664840993 is a wasteful number, since it uses less digits than its factorization.

2664840993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680943.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The square root of 2664840993 is about 51622.0979135874. The cubic root of 2664840993 is about 1386.4060135990.

The spelling of 2664840993 in words is "two billion, six hundred sixty-four million, eight hundred forty thousand, nine hundred ninety-three".