705449280 has 112 divisors (see below), whose sum is σ = 2294558784. Its totient is φ = 183521280.

The previous prime is 705449267. The next prime is 705449293. The reversal of 705449280 is 82944507.

It is an interprime number because it is at equal distance from previous prime (705449267) and next prime (705449293).

It is a congruent number.

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, 30399 + ... + 48321.

It is an arithmetic number, because the mean of its divisors is an integer number (20487132).

Almost surely, 2^705449280 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 705449280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1147279392).

705449280 is an abundant number, since it is smaller than the sum of its proper divisors (1589109504).

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

705449280 is a wasteful number, since it uses less digits than its factorization.

705449280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17984 (or 17974 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 705449280 is about 26560.2951790826. The cubic root of 705449280 is about 890.2020666470.

The spelling of 705449280 in words is "seven hundred five million, four hundred forty-nine thousand, two hundred eighty".