6618916740 has 48 divisors (see below), whose sum is σ = 18657374400. Its totient is φ = 1753196160.

The previous prime is 6618916727. The next prime is 6618916807. The reversal of 6618916740 is 476198166.

It is a happy number.

It is a super-2 number, since 2×6618916740² = 87620117622104455200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6618916740.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361246 + ... + 379125.

It is an arithmetic number, because the mean of its divisors is an integer number (388695300).

Almost surely, 2^6618916740 is an apocalyptic number.

6618916740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6618916740 is an abundant number, since it is smaller than the sum of its proper divisors (12038457660).

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

6618916740 is a wasteful number, since it uses less digits than its factorization.

6618916740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740532 (or 740530 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 6618916740 is about 81356.7252290799. The cubic root of 6618916740 is about 1877.5678466596.

The spelling of 6618916740 in words is "six billion, six hundred eighteen million, nine hundred sixteen thousand, seven hundred forty".