670647732 has 12 divisors (see below), whose sum is σ = 1564844736. Its totient is φ = 223549240.

The previous prime is 670647697. The next prime is 670647767. The reversal of 670647732 is 237746076.

It is an interprime number because it is at equal distance from previous prime (670647697) and next prime (670647767).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27943644 + ... + 27943667.

It is an arithmetic number, because the mean of its divisors is an integer number (130403728).

Almost surely, 2^670647732 is an apocalyptic number.

It is an amenable number.

670647732 is an abundant number, since it is smaller than the sum of its proper divisors (894197004).

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

670647732 is a wasteful number, since it uses less digits than its factorization.

670647732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55887318 (or 55887316 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 42.

The square root of 670647732 is about 25896.8672236624. The cubic root of 670647732 is about 875.3159053077.

The spelling of 670647732 in words is "six hundred seventy million, six hundred forty-seven thousand, seven hundred thirty-two".