7773612664 has 16 divisors (see below), whose sum is σ = 14636512800. Its totient is φ = 3870542592.

The previous prime is 7773612659. The next prime is 7773612677. The reversal of 7773612664 is 4662163777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030937 + ... + 2034760.

It is an arithmetic number, because the mean of its divisors is an integer number (914782050).

Almost surely, 2^7773612664 is an apocalyptic number.

It is an amenable number.

7773612664 is a deficient number, since it is larger than the sum of its proper divisors (6862900136).

7773612664 is a wasteful number, since it uses less digits than its factorization.

7773612664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065942 (or 4065938 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 49.

The square root of 7773612664 is about 88168.0932310550. The cubic root of 7773612664 is about 1980.9535814191.

The spelling of 7773612664 in words is "seven billion, seven hundred seventy-three million, six hundred twelve thousand, six hundred sixty-four".