670742532 has 60 divisors (see below), whose sum is σ = 1766950416. Its totient is φ = 221860080.

The previous prime is 670742521. The next prime is 670742533. The reversal of 670742532 is 235247076.

It is a happy number.

670742532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (670742533) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34543 + ... + 50345.

Almost surely, 2^670742532 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 670742532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883475208).

670742532 is an abundant number, since it is smaller than the sum of its proper divisors (1096207884).

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

670742532 is a wasteful number, since it uses less digits than its factorization.

670742532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15950 (or 15939 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 670742532 is about 25898.6974962063. The cubic root of 670742532 is about 875.3571470477.

The spelling of 670742532 in words is "six hundred seventy million, seven hundred forty-two thousand, five hundred thirty-two".