670947432 has 64 divisors (see below), whose sum is σ = 1797526080. Its totient is φ = 207946752.

The previous prime is 670947413. The next prime is 670947527. The reversal of 670947432 is 234749076.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23958 + ... + 43770.

It is an arithmetic number, because the mean of its divisors is an integer number (28086345).

Almost surely, 2^670947432 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 670947432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898763040).

670947432 is an abundant number, since it is smaller than the sum of its proper divisors (1126578648).

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

670947432 is a wasteful number, since it uses less digits than its factorization.

670947432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19922 (or 19918 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 670947432 is about 25902.6529915374. The cubic root of 670947432 is about 875.4462733568.

The spelling of 670947432 in words is "six hundred seventy million, nine hundred forty-seven thousand, four hundred thirty-two".