705632040 has 64 divisors (see below), whose sum is σ = 2352110400. Its totient is φ = 188168256.

The previous prime is 705632027. The next prime is 705632047. The reversal of 705632040 is 40236507.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 705631995 and 705632013.

It is not an unprimeable number, because it can be changed into a prime (705632047) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 325602 + ... + 327761.

It is an arithmetic number, because the mean of its divisors is an integer number (36751725).

Almost surely, 2^705632040 is an apocalyptic number.

It is an amenable number.

705632040 is an abundant number, since it is smaller than the sum of its proper divisors (1646478360).

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

705632040 is a wasteful number, since it uses less digits than its factorization.

705632040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653383 (or 653373 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 705632040 is about 26563.7354300934. The cubic root of 705632040 is about 890.2789345791.

Adding to 705632040 its reverse (40236507), we get a palindrome (745868547).

The spelling of 705632040 in words is "seven hundred five million, six hundred thirty-two thousand, forty".