670903128 has 128 divisors (see below), whose sum is σ = 2143411200. Its totient is φ = 190467072.

The previous prime is 670903127. The next prime is 670903151. The reversal of 670903128 is 821309076.

It is a super-2 number, since 2×670903128² = 900222014320368768, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 670903092 and 670903101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670903127) 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, 251176 + ... + 253832.

It is an arithmetic number, because the mean of its divisors is an integer number (16745400).

Almost surely, 2^670903128 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 670903128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071705600).

670903128 is an abundant number, since it is smaller than the sum of its proper divisors (1472508072).

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

670903128 is a wasteful number, since it uses less digits than its factorization.

670903128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 670903128 is about 25901.7977754441. The cubic root of 670903128 is about 875.4270037769.

The spelling of 670903128 in words is "six hundred seventy million, nine hundred three thousand, one hundred twenty-eight".