671612100 has 36 divisors (see below), whose sum is σ = 1943198544. Its totient is φ = 179096480.

The previous prime is 671612089. The next prime is 671612113. The reversal of 671612100 is 1216176.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1119054 + ... + 1119653.

Almost surely, 2^671612100 is an apocalyptic number.

671612100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671612100 is an abundant number, since it is smaller than the sum of its proper divisors (1271586444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671612100 is a wasteful number, since it uses less digits than its factorization.

671612100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238724 (or 2238717 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 671612100 is about 25915.4799299569. The cubic root of 671612100 is about 875.7352622584.

Adding to 671612100 its reverse (1216176), we get a palindrome (672828276).

The spelling of 671612100 in words is "six hundred seventy-one million, six hundred twelve thousand, one hundred".