7660649 has 2 divisors, whose sum is σ = 7660650. Its totient is φ = 7660648.

The previous prime is 7660643. The next prime is 7660699. The reversal of 7660649 is 9460667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4545424 + 3115225 = 2132^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 7660649 - 2¹⁶ = 7595113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7660643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3830324 + 3830325.

It is an arithmetic number, because the mean of its divisors is an integer number (3830325).

Almost surely, 2^7660649 is an apocalyptic number.

It is an amenable number.

7660649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7660649 is an equidigital number, since it uses as much as digits as its factorization.

7660649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 7660649 is about 2767.7877447521. The cubic root of 7660649 is about 197.1311193890.

The spelling of 7660649 in words is "seven million, six hundred sixty thousand, six hundred forty-nine".