7664651 has 2 divisors, whose sum is σ = 7664652. Its totient is φ = 7664650.

The previous prime is 7664641. The next prime is 7664653. The reversal of 7664651 is 1564667.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7664651 is a prime.

Together with 7664653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7664653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832325 + 3832326.

It is an arithmetic number, because the mean of its divisors is an integer number (3832326).

Almost surely, 2^7664651 is an apocalyptic number.

7664651 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664651 is an equidigital number, since it uses as much as digits as its factorization.

7664651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 7664651 is about 2768.5106104185. The cubic root of 7664651 is about 197.1654411721.

The spelling of 7664651 in words is "seven million, six hundred sixty-four thousand, six hundred fifty-one".