7768993 has 4 divisors (see below), whose sum is σ = 7782400. Its totient is φ = 7755588.

The previous prime is 7768987. The next prime is 7768997. The reversal of 7768993 is 3998677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7768993 - 2⁵ = 7768961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7768997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5793 + ... + 7006.

It is an arithmetic number, because the mean of its divisors is an integer number (1945600).

Almost surely, 2^7768993 is an apocalyptic number.

It is an amenable number.

7768993 is a deficient number, since it is larger than the sum of its proper divisors (13407).

7768993 is a wasteful number, since it uses less digits than its factorization.

7768993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13406.

The product of its digits is 571536, while the sum is 49.

The square root of 7768993 is about 2787.2913374816. The cubic root of 7768993 is about 198.0561093235.

The spelling of 7768993 in words is "seven million, seven hundred sixty-eight thousand, nine hundred ninety-three".