6616237680 has 160 divisors (see below), whose sum is σ = 24542387520. Its totient is φ = 1628605440.

The previous prime is 6616237643. The next prime is 6616237687. The reversal of 6616237680 is 867326166.

6616237680 is a `hidden beast` number, since 6 + 616 + 23 + 7 + 6 + 8 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616237687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89731 + ... + 145890.

It is an arithmetic number, because the mean of its divisors is an integer number (153389922).

Almost surely, 2^6616237680 is an apocalyptic number.

6616237680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6616237680 is an abundant number, since it is smaller than the sum of its proper divisors (17926149840).

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

6616237680 is a wasteful number, since it uses less digits than its factorization.

6616237680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235656 (or 235644 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6616237680 is about 81340.2586669111. The cubic root of 6616237680 is about 1877.3144922248.

The spelling of 6616237680 in words is "six billion, six hundred sixteen million, two hundred thirty-seven thousand, six hundred eighty".