7664225777 has 8 divisors (see below), whose sum is σ = 8333916864. Its totient is φ = 7005982608.

The previous prime is 7664225773. The next prime is 7664225801. The reversal of 7664225777 is 7775224667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7664225777 - 2² = 7664225773 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7664225773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2860583 + ... + 2863260.

It is an arithmetic number, because the mean of its divisors is an integer number (1041739608).

Almost surely, 2^7664225777 is an apocalyptic number.

It is an amenable number.

7664225777 is a deficient number, since it is larger than the sum of its proper divisors (669691087).

7664225777 is a wasteful number, since it uses less digits than its factorization.

7664225777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723959.

The product of its digits is 6914880, while the sum is 53.

The square root of 7664225777 is about 87545.5640052653. The cubic root of 7664225777 is about 1971.6179495991.

The spelling of 7664225777 in words is "seven billion, six hundred sixty-four million, two hundred twenty-five thousand, seven hundred seventy-seven".