7664804672 has 56 divisors (see below), whose sum is σ = 17449044096. Its totient is φ = 3272375808.

The previous prime is 7664804669. The next prime is 7664804677. The reversal of 7664804672 is 2764084667.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 7664804672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664804677) 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, 85298 + ... + 150350.

Almost surely, 2^7664804672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7664804672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8724522048).

7664804672 is an abundant number, since it is smaller than the sum of its proper divisors (9784239424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7664804672 is a wasteful number, since it uses less digits than its factorization.

7664804672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65335 (or 65325 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 50.

The square root of 7664804672 is about 87548.8701925959. The cubic root of 7664804672 is about 1971.6675884916.

The spelling of 7664804672 in words is "seven billion, six hundred sixty-four million, eight hundred four thousand, six hundred seventy-two".