671641248 has 48 divisors (see below), whose sum is σ = 1764776160. Its totient is φ = 223662336.

The previous prime is 671641237. The next prime is 671641249. The reversal of 671641248 is 842146176.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×671641248² = 902203932029995008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671641249) 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, 118086 + ... + 123642.

It is an arithmetic number, because the mean of its divisors is an integer number (36766170).

Almost surely, 2^671641248 is an apocalyptic number.

It is an amenable number.

671641248 is an abundant number, since it is smaller than the sum of its proper divisors (1093134912).

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

671641248 is a wasteful number, since it uses less digits than its factorization.

671641248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829 (or 6821 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 671641248 is about 25916.0422904424. The cubic root of 671641248 is about 875.7479310604.

The spelling of 671641248 in words is "six hundred seventy-one million, six hundred forty-one thousand, two hundred forty-eight".