70144648 has 32 divisors (see below), whose sum is σ = 151781760. Its totient is φ = 29767680.

The previous prime is 70144639. The next prime is 70144667. The reversal of 70144648 is 84644107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313 + ... + 11848.

It is an arithmetic number, because the mean of its divisors is an integer number (4743180).

Almost surely, 2^70144648 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 70144648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75890880).

70144648 is an abundant number, since it is smaller than the sum of its proper divisors (81637112).

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

70144648 is a wasteful number, since it uses less digits than its factorization.

70144648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12277 (or 12273 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 70144648 is about 8375.2401756606. The cubic root of 70144648 is about 412.4122088040.

The spelling of 70144648 in words is "seventy million, one hundred forty-four thousand, six hundred forty-eight".