7776013 has 4 divisors (see below), whose sum is σ = 8886880. Its totient is φ = 6665148.

The previous prime is 7775981. The next prime is 7776059. The reversal of 7776013 is 3106777.

It is a happy number.

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 not a de Polignac number, because 7776013 - 2⁵ = 7775981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7776313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555423 + ... + 555436.

It is an arithmetic number, because the mean of its divisors is an integer number (2221720).

Almost surely, 2^7776013 is an apocalyptic number.

It is an amenable number.

7776013 is a deficient number, since it is larger than the sum of its proper divisors (1110867).

7776013 is a wasteful number, since it uses less digits than its factorization.

7776013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110866.

The product of its (nonzero) digits is 6174, while the sum is 31.

The square root of 7776013 is about 2788.5503402306. The cubic root of 7776013 is about 198.1157453376.

The spelling of 7776013 in words is "seven million, seven hundred seventy-six thousand, thirteen".