646115099 has 8 divisors (see below), whose sum is σ = 763880160. Its totient is φ = 534715776.

The previous prime is 646115089. The next prime is 646115101. The reversal of 646115099 is 990511646.

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

It is not a de Polignac number, because 646115099 - 2¹² = 646111003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646115089) 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, 1591214 + ... + 1591619.

It is an arithmetic number, because the mean of its divisors is an integer number (95485020).

Almost surely, 2^646115099 is an apocalyptic number.

646115099 is a deficient number, since it is larger than the sum of its proper divisors (117765061).

646115099 is a wasteful number, since it uses less digits than its factorization.

646115099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182869.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 646115099 is about 25418.7942082232. The cubic root of 646115099 is about 864.5098848454.

The spelling of 646115099 in words is "six hundred forty-six million, one hundred fifteen thousand, ninety-nine".