671148216 has 24 divisors (see below), whose sum is σ = 1817693280. Its totient is φ = 223716048.

The previous prime is 671148197. The next prime is 671148223. The reversal of 671148216 is 612841176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4660680 + ... + 4660823.

It is an arithmetic number, because the mean of its divisors is an integer number (75737220).

Almost surely, 2^671148216 is an apocalyptic number.

It is an amenable number.

671148216 is an abundant number, since it is smaller than the sum of its proper divisors (1146545064).

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

671148216 is a wasteful number, since it uses less digits than its factorization.

671148216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9321515 (or 9321508 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 671148216 is about 25906.5284436182. The cubic root of 671148216 is about 875.5335917095.

The spelling of 671148216 in words is "six hundred seventy-one million, one hundred forty-eight thousand, two hundred sixteen".