70666344 has 128 divisors (see below), whose sum is σ = 227500800. Its totient is φ = 20155392.

The previous prime is 70666303. The next prime is 70666361. The reversal of 70666344 is 44366607.

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 = 70666299 and 70666308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122184 + ... + 122760.

It is an arithmetic number, because the mean of its divisors is an integer number (1777350).

Almost surely, 2^70666344 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 70666344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113750400).

70666344 is an abundant number, since it is smaller than the sum of its proper divisors (156834456).

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

70666344 is an equidigital number, since it uses as much as digits as its factorization.

70666344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 70666344 is about 8406.3276167420. The cubic root of 70666344 is about 413.4321136324.

The spelling of 70666344 in words is "seventy million, six hundred sixty-six thousand, three hundred forty-four".