670949370 has 384 divisors, whose sum is σ = 2339850240. Its totient is φ = 129392640.

The previous prime is 670949347. The next prime is 670949371. The reversal of 670949370 is 73949076.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (670949371) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8492991 + ... + 8493069.

It is an arithmetic number, because the mean of its divisors is an integer number (6093360).

Almost surely, 2^670949370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670949370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169925120).

670949370 is an abundant number, since it is smaller than the sum of its proper divisors (1668900870).

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

670949370 is a wasteful number, since it uses less digits than its factorization.

670949370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 670949370 is about 25902.6904008059. The cubic root of 670949370 is about 875.4471162511.

The spelling of 670949370 in words is "six hundred seventy million, nine hundred forty-nine thousand, three hundred seventy".