705421136 has 40 divisors (see below), whose sum is σ = 1566566400. Its totient is φ = 301440384.

The previous prime is 705421133. The next prime is 705421153. The reversal of 705421136 is 631124507.

705421136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 705421099 and 705421108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705421133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30065 + ... + 48111.

It is an arithmetic number, because the mean of its divisors is an integer number (39164160).

Almost surely, 2^705421136 is an apocalyptic number.

It is an amenable number.

705421136 is an abundant number, since it is smaller than the sum of its proper divisors (861145264).

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

705421136 is a wasteful number, since it uses less digits than its factorization.

705421136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18411 (or 18405 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 705421136 is about 26559.7653604093. The cubic root of 705421136 is about 890.1902282432.

The spelling of 705421136 in words is "seven hundred five million, four hundred twenty-one thousand, one hundred thirty-six".