70857630 has 96 divisors (see below), whose sum is σ = 192741120. Its totient is φ = 18040320.

The previous prime is 70857629. The next prime is 70857637. The reversal of 70857630 is 3675807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70857637) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303994 + ... + 304226.

It is an arithmetic number, because the mean of its divisors is an integer number (2007720).

Almost surely, 2^70857630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70857630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96370560).

70857630 is an abundant number, since it is smaller than the sum of its proper divisors (121883490).

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

70857630 is a wasteful number, since it uses less digits than its factorization.

70857630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 70857630 is about 8417.6974286321. The cubic root of 70857630 is about 413.8048159257.

The spelling of 70857630 in words is "seventy million, eight hundred fifty-seven thousand, six hundred thirty".