671858099 has 8 divisors (see below), whose sum is σ = 752745648. Its totient is φ = 594272160.

The previous prime is 671858081. The next prime is 671858119. The reversal of 671858099 is 990858176.

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 671858099 - 2²⁴ = 655080883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671858099.

It is not an unprimeable number, because it can be changed into a prime (671858599) 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, 824972 + ... + 825785.

It is an arithmetic number, because the mean of its divisors is an integer number (94093206).

Almost surely, 2^671858099 is an apocalyptic number.

671858099 is a deficient number, since it is larger than the sum of its proper divisors (80887549).

671858099 is a wasteful number, since it uses less digits than its factorization.

671858099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650805.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 671858099 is about 25920.2256741719. The cubic root of 671858099 is about 875.8421710437.

The spelling of 671858099 in words is "six hundred seventy-one million, eight hundred fifty-eight thousand, ninety-nine".