7664213 has 4 divisors (see below), whose sum is σ = 7684608. Its totient is φ = 7643820.

The previous prime is 7664203. The next prime is 7664219. The reversal of 7664213 is 3124667.

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 7664213 - 2¹⁰ = 7663189 is a prime.

It is a Duffinian number.

7664213 is a modest number, since divided by 4213 gives 766 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664219) 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, 9623 + ... + 10388.

It is an arithmetic number, because the mean of its divisors is an integer number (1921152).

Almost surely, 2^7664213 is an apocalyptic number.

It is an amenable number.

7664213 is a deficient number, since it is larger than the sum of its proper divisors (20395).

7664213 is a wasteful number, since it uses less digits than its factorization.

7664213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20394.

The product of its digits is 6048, while the sum is 29.

The square root of 7664213 is about 2768.4315053835. The cubic root of 7664213 is about 197.1616853973.

The spelling of 7664213 in words is "seven million, six hundred sixty-four thousand, two hundred thirteen".