670236528 has 80 divisors (see below), whose sum is σ = 1908072320. Its totient is φ = 201422592.

The previous prime is 670236503. The next prime is 670236557. The reversal of 670236528 is 825632076.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 14343 + ... + 39321.

It is an arithmetic number, because the mean of its divisors is an integer number (23850904).

Almost surely, 2^670236528 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 670236528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954036160).

670236528 is an abundant number, since it is smaller than the sum of its proper divisors (1237835792).

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

670236528 is a wasteful number, since it uses less digits than its factorization.

670236528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25046 (or 25040 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 670236528 is about 25888.9267448460. The cubic root of 670236528 is about 875.1369703402.

The spelling of 670236528 in words is "six hundred seventy million, two hundred thirty-six thousand, five hundred twenty-eight".