671602216 has 8 divisors (see below), whose sum is σ = 1259254170. Its totient is φ = 335801104.

The previous prime is 671602201. The next prime is 671602237. The reversal of 671602216 is 612206176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 578402500 + 93199716 = 24050^2 + 9654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×671602216² = 902099073072221312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41975131 + ... + 41975146.

Almost surely, 2^671602216 is an apocalyptic number.

It is an amenable number.

671602216 is a deficient number, since it is larger than the sum of its proper divisors (587651954).

671602216 is a wasteful number, since it uses less digits than its factorization.

671602216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83950283 (or 83950279 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 671602216 is about 25915.2892324203. The cubic root of 671602216 is about 875.7309662221.

The spelling of 671602216 in words is "six hundred seventy-one million, six hundred two thousand, two hundred sixteen".