671065452 has 96 divisors (see below), whose sum is σ = 1811980800. Its totient is φ = 214514496.

The previous prime is 671065393. The next prime is 671065459. The reversal of 671065452 is 254560176.

It is a happy number.

671065452 is a `hidden beast` number, since 6 + 7 + 106 + 545 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (671065459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 522403 + ... + 523685.

It is an arithmetic number, because the mean of its divisors is an integer number (18874800).

Almost surely, 2^671065452 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 671065452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905990400).

671065452 is an abundant number, since it is smaller than the sum of its proper divisors (1140915348).

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

671065452 is a wasteful number, since it uses less digits than its factorization.

671065452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 671065452 is about 25904.9310363876. The cubic root of 671065452 is about 875.4976008313.

The spelling of 671065452 in words is "six hundred seventy-one million, sixty-five thousand, four hundred fifty-two".