70780068 has 120 divisors (see below), whose sum is σ = 198401280. Its totient is φ = 22044960.

The previous prime is 70780067. The next prime is 70780079. The reversal of 70780068 is 86008707.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (70780067) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2283213 + ... + 2283243.

It is an arithmetic number, because the mean of its divisors is an integer number (1653344).

Almost surely, 2^70780068 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 70780068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99200640).

70780068 is an abundant number, since it is smaller than the sum of its proper divisors (127621212).

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

70780068 is an equidigital number, since it uses as much as digits as its factorization.

70780068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 70780068 is about 8413.0890878440. The cubic root of 70780068 is about 413.6537748073.

The spelling of 70780068 in words is "seventy million, seven hundred eighty thousand, sixty-eight".