6661715001 has 8 divisors (see below), whose sum is σ = 9349775520. Its totient is φ = 4207398912.

The previous prime is 6661714991. The next prime is 6661715069. The reversal of 6661715001 is 1005171666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6661715001 - 2¹⁸ = 6661452857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6661735001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58436040 + ... + 58436153.

It is an arithmetic number, because the mean of its divisors is an integer number (1168721940).

Almost surely, 2^6661715001 is an apocalyptic number.

It is an amenable number.

6661715001 is a deficient number, since it is larger than the sum of its proper divisors (2688060519).

6661715001 is a wasteful number, since it uses less digits than its factorization.

6661715001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116872215.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 6661715001 is about 81619.3298244968. The cubic root of 6661715001 is about 1881.6059727686.

Adding to 6661715001 its reverse (1005171666), we get a palindrome (7666886667).

It can be divided in two parts, 66617 and 15001, that added together give a palindrome (81618).

The spelling of 6661715001 in words is "six billion, six hundred sixty-one million, seven hundred fifteen thousand, one".