7664897 has 4 divisors (see below), whose sum is σ = 7713876. Its totient is φ = 7615920.

The previous prime is 7664887. The next prime is 7664929. The reversal of 7664897 is 7984667.

It is a happy number.

7664897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7984667 = 73 ⋅109379.

It can be written as a sum of positive squares in 2 ways, for example, as 4096576 + 3568321 = 2024^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 7664897 - 2⁸ = 7664641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24254 + ... + 24567.

It is an arithmetic number, because the mean of its divisors is an integer number (1928469).

Almost surely, 2^7664897 is an apocalyptic number.

It is an amenable number.

7664897 is a deficient number, since it is larger than the sum of its proper divisors (48979).

7664897 is a wasteful number, since it uses less digits than its factorization.

7664897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48978.

The product of its digits is 508032, while the sum is 47.

The square root of 7664897 is about 2768.5550382826. Note that the first 3 decimals coincide. The cubic root of 7664897 is about 197.1675505171.

The spelling of 7664897 in words is "seven million, six hundred sixty-four thousand, eight hundred ninety-seven".