705661272 has 48 divisors (see below), whose sum is σ = 1915154280. Its totient is φ = 234729600.

The previous prime is 705661267. The next prime is 705661283. The reversal of 705661272 is 272166507.

705661272 is a `hidden beast` number, since 70 + 566 + 1 + 27 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25372 + ... + 45332.

Almost surely, 2^705661272 is an apocalyptic number.

705661272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

705661272 is an abundant number, since it is smaller than the sum of its proper divisors (1209493008).

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

705661272 is a wasteful number, since it uses less digits than its factorization.

705661272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20464 (or 20457 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 705661272 is about 26564.2856482157. The cubic root of 705661272 is about 890.2912281792.

The spelling of 705661272 in words is "seven hundred five million, six hundred sixty-one thousand, two hundred seventy-two".