7664653 has 2 divisors, whose sum is σ = 7664654. Its totient is φ = 7664652.

The previous prime is 7664651. The next prime is 7664669. The reversal of 7664653 is 3564667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7469289 + 195364 = 2733^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 7664653 - 2¹ = 7664651 is a prime.

It is a super-2 number, since 2×7664653² = 117493811220818, which contains 22 as substring.

Together with 7664651, it forms a pair of twin primes.

7664653 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7664651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832326 + 3832327.

It is an arithmetic number, because the mean of its divisors is an integer number (3832327).

Almost surely, 2^7664653 is an apocalyptic number.

It is an amenable number.

7664653 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664653 is an equidigital number, since it uses as much as digits as its factorization.

7664653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 7664653 is about 2768.5109716236. The cubic root of 7664653 is about 197.1654583214.

The spelling of 7664653 in words is "seven million, six hundred sixty-four thousand, six hundred fifty-three".