7740013 has 4 divisors (see below), whose sum is σ = 8006940. Its totient is φ = 7473088.

The previous prime is 7740001. The next prime is 7740023. The reversal of 7740013 is 3100477.

7740013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5774409 + 1965604 = 2403^2 + 1402^2 .

It is a cyclic number.

It is not a de Polignac number, because 7740013 - 2¹⁷ = 7608941 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 (7740023) 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, 133420 + ... + 133477.

It is an arithmetic number, because the mean of its divisors is an integer number (2001735).

Almost surely, 2^7740013 is an apocalyptic number.

It is an amenable number.

7740013 is a deficient number, since it is larger than the sum of its proper divisors (266927).

7740013 is a wasteful number, since it uses less digits than its factorization.

7740013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266926.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 7740013 is about 2782.0878850245. The cubic root of 7740013 is about 197.8095386461.

The spelling of 7740013 in words is "seven million, seven hundred forty thousand, thirteen".