7640339 has 4 divisors (see below), whose sum is σ = 8731824. Its totient is φ = 6548856.

The previous prime is 7640333. The next prime is 7640341. The reversal of 7640339 is 9330467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9330467 = 17 ⋅548851.

It is a cyclic number.

It is not a de Polignac number, because 7640339 - 2¹⁶ = 7574803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7640333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545732 + ... + 545745.

It is an arithmetic number, because the mean of its divisors is an integer number (2182956).

Almost surely, 2^7640339 is an apocalyptic number.

7640339 is a deficient number, since it is larger than the sum of its proper divisors (1091485).

7640339 is a wasteful number, since it uses less digits than its factorization.

7640339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091484.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 7640339 is about 2764.1163144846. The cubic root of 7640339 is about 196.9567531134.

The spelling of 7640339 in words is "seven million, six hundred forty thousand, three hundred thirty-nine".