646159241 has 8 divisors (see below), whose sum is σ = 795273024. Its totient is φ = 511246800.

The previous prime is 646159223. The next prime is 646159247. The reversal of 646159241 is 142951646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646159241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 646159195 and 646159204.

It is not an unprimeable number, because it can be changed into a prime (646159247) 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, 3550235 + ... + 3550416.

It is an arithmetic number, because the mean of its divisors is an integer number (99409128).

Almost surely, 2^646159241 is an apocalyptic number.

It is an amenable number.

646159241 is a deficient number, since it is larger than the sum of its proper divisors (149113783).

646159241 is a wasteful number, since it uses less digits than its factorization.

646159241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100671.

The product of its digits is 51840, while the sum is 38.

The square root of 646159241 is about 25419.6624879246. The cubic root of 646159241 is about 864.5295719086.

The spelling of 646159241 in words is "six hundred forty-six million, one hundred fifty-nine thousand, two hundred forty-one".