7640271868 has 36 divisors (see below), whose sum is σ = 14156585352. Its totient is φ = 3607443360.

The previous prime is 7640271851. The next prime is 7640271871. The reversal of 7640271868 is 8681720467.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449403 + ... + 466093.

It is an arithmetic number, because the mean of its divisors is an integer number (393238482).

Almost surely, 2^7640271868 is an apocalyptic number.

It is an amenable number.

7640271868 is a deficient number, since it is larger than the sum of its proper divisors (6516313484).

7640271868 is a wasteful number, since it uses less digits than its factorization.

7640271868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17050 (or 17029 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The square root of 7640271868 is about 87408.6487025168. The cubic root of 7640271868 is about 1969.5617625685.

The spelling of 7640271868 in words is "seven billion, six hundred forty million, two hundred seventy-one thousand, eight hundred sixty-eight".