7646399 has 4 divisors (see below), whose sum is σ = 7653000. Its totient is φ = 7639800.

The previous prime is 7646393. The next prime is 7646423. The reversal of 7646399 is 9936467.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7646399 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7646393) 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, 1052 + ... + 4049.

It is an arithmetic number, because the mean of its divisors is an integer number (1913250).

Almost surely, 2^7646399 is an apocalyptic number.

7646399 is a deficient number, since it is larger than the sum of its proper divisors (6601).

7646399 is a wasteful number, since it uses less digits than its factorization.

7646399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6600.

The product of its digits is 244944, while the sum is 44.

The square root of 7646399 is about 2765.2122884148. The cubic root of 7646399 is about 197.0088119947.

The spelling of 7646399 in words is "seven million, six hundred forty-six thousand, three hundred ninety-nine".