671542236 has 36 divisors (see below), whose sum is σ = 1698324264. Its totient is φ = 223740000.

The previous prime is 671542219. The next prime is 671542253. The reversal of 671542236 is 632245176.

671542236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (671542219) and next prime (671542253).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 671542236.

It is a congruent number.

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, 116011 + ... + 121661.

It is an arithmetic number, because the mean of its divisors is an integer number (47175674).

Almost surely, 2^671542236 is an apocalyptic number.

It is an amenable number.

671542236 is an abundant number, since it is smaller than the sum of its proper divisors (1026782028).

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

671542236 is a wasteful number, since it uses less digits than its factorization.

671542236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8962 (or 8957 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 671542236 is about 25914.1319746582. The cubic root of 671542236 is about 875.7048952802.

The spelling of 671542236 in words is "six hundred seventy-one million, five hundred forty-two thousand, two hundred thirty-six".