7767850864 has 40 divisors (see below), whose sum is σ = 15877890000. Its totient is φ = 3671248896.

The previous prime is 7767850829. The next prime is 7767850897. The reversal of 7767850864 is 4680587677.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7767850799 and 7767850808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108042 + ... + 164950.

It is an arithmetic number, because the mean of its divisors is an integer number (396947250).

Almost surely, 2^7767850864 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 7767850864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7938945000).

7767850864 is an abundant number, since it is smaller than the sum of its proper divisors (8110039136).

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

7767850864 is a wasteful number, since it uses less digits than its factorization.

7767850864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57385 (or 57379 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 58.

The square root of 7767850864 is about 88135.4120884449. The cubic root of 7767850864 is about 1980.4640329949.

The spelling of 7767850864 in words is "seven billion, seven hundred sixty-seven million, eight hundred fifty thousand, eight hundred sixty-four".