8661492001 has 8 divisors (see below), whose sum is σ = 8690762304. Its totient is φ = 8632272240.

The previous prime is 8661491999. The next prime is 8661492011. The reversal of 8661492001 is 1002941668.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8661492001 - 2¹ = 8661491999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8661492011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347796 + ... + 371866.

It is an arithmetic number, because the mean of its divisors is an integer number (1086345288).

Almost surely, 2^8661492001 is an apocalyptic number.

It is an amenable number.

8661492001 is a deficient number, since it is larger than the sum of its proper divisors (29270303).

8661492001 is a wasteful number, since it uses less digits than its factorization.

8661492001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25271.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 8661492001 is about 93067.1370624454. The cubic root of 8661492001 is about 2053.6711533386.

The spelling of 8661492001 in words is "eight billion, six hundred sixty-one million, four hundred ninety-two thousand, one".