70947648 has 84 divisors (see below), whose sum is σ = 208917540. Its totient is φ = 23003136.

The previous prime is 70947641. The next prime is 70947649. The reversal of 70947648 is 84674907.

It can be written as a sum of positive squares in 2 ways, for example, as 47444544 + 23503104 = 6888^2 + 4848^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70947641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19648 + ... + 22976.

Almost surely, 2^70947648 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 70947648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104458770).

70947648 is an abundant number, since it is smaller than the sum of its proper divisors (137969892).

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

70947648 is a wasteful number, since it uses less digits than its factorization.

70947648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384 (or 3371 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 70947648 is about 8423.0426806469. The cubic root of 70947648 is about 413.9799752269.

The spelling of 70947648 in words is "seventy million, nine hundred forty-seven thousand, six hundred forty-eight".