671656700 has 108 divisors (see below), whose sum is σ = 1722186648. Its totient is φ = 225388800.

The previous prime is 671656697. The next prime is 671656703. The reversal of 671656700 is 7656176.

It is an interprime number because it is at equal distance from previous prime (671656697) and next prime (671656703).

It is a super-2 number, since 2×671656700² = 902245445309780000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671656703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 184094 + ... + 187706.

Almost surely, 2^671656700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671656700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861093324).

671656700 is an abundant number, since it is smaller than the sum of its proper divisors (1050529948).

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

671656700 is a wasteful number, since it uses less digits than its factorization.

671656700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664 (or 3644 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 671656700 is about 25916.3404052347. The cubic root of 671656700 is about 875.7546469241.

The spelling of 671656700 in words is "six hundred seventy-one million, six hundred fifty-six thousand, seven hundred".