6634860388 has 12 divisors (see below), whose sum is σ = 12504160060. Its totient is φ = 3062243232.

The previous prime is 6634860373. The next prime is 6634860409. The reversal of 6634860388 is 8830684366.

It can be written as a sum of positive squares in 2 ways, for example, as 1362938724 + 5271921664 = 36918^2 + 72608^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 127593469 = 6634860388 / (6 + 6 + 3 + 4 + 8 + 6 + 0 + 3 + 8 + 8).

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, 63796683 + ... + 63796786.

Almost surely, 2^6634860388 is an apocalyptic number.

It is an amenable number.

6634860388 is a deficient number, since it is larger than the sum of its proper divisors (5869299672).

6634860388 is a wasteful number, since it uses less digits than its factorization.

6634860388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127593486 (or 127593484 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The square root of 6634860388 is about 81454.6523410419. The cubic root of 6634860388 is about 1879.0741997430.

It can be divided in two parts, 66348 and 60388, that added together give a square (126736 = 356²).

The spelling of 6634860388 in words is "six billion, six hundred thirty-four million, eight hundred sixty thousand, three hundred eighty-eight".