6618540797 has 16 divisors (see below), whose sum is σ = 7526075712. Its totient is φ = 5766837120.

The previous prime is 6618540791. The next prime is 6618540811. The reversal of 6618540797 is 7970458166.

It is not a de Polignac number, because 6618540797 - 2¹⁶ = 6618475261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6618540791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94088 + ... + 148625.

It is an arithmetic number, because the mean of its divisors is an integer number (470379732).

Almost surely, 2^6618540797 is an apocalyptic number.

6618540797 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6618540797 is a deficient number, since it is larger than the sum of its proper divisors (907534915).

6618540797 is a wasteful number, since it uses less digits than its factorization.

6618540797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242828.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 6618540797 is about 81354.4147357720. The cubic root of 6618540797 is about 1877.5322984533.

It can be divided in two parts, 661 and 8540797, that added together give a palindrome (8541458).

The spelling of 6618540797 in words is "six billion, six hundred eighteen million, five hundred forty thousand, seven hundred ninety-seven".