70566440 has 64 divisors (see below), whose sum is σ = 185708160. Its totient is φ = 23627520.

The previous prime is 70566401. The next prime is 70566451. The reversal of 70566440 is 4466507.

It is a junction number, because it is equal to n+sod(n) for n = 70566397 and 70566406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9110 + ... + 14970.

It is an arithmetic number, because the mean of its divisors is an integer number (2901690).

Almost surely, 2^70566440 is an apocalyptic number.

70566440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70566440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92854080).

70566440 is an abundant number, since it is smaller than the sum of its proper divisors (115141720).

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

70566440 is a wasteful number, since it uses less digits than its factorization.

70566440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5922 (or 5918 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 70566440 is about 8400.3833245870. The cubic root of 70566440 is about 413.2371929247.

The spelling of 70566440 in words is "seventy million, five hundred sixty-six thousand, four hundred forty".