705423091 has 8 divisors (see below), whose sum is σ = 713319264. Its totient is φ = 697539840.

The previous prime is 705423053. The next prime is 705423113. The reversal of 705423091 is 190324507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 705423091 - 2²³ = 697034483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705403091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142386 + ... + 147256.

It is an arithmetic number, because the mean of its divisors is an integer number (89164908).

Almost surely, 2^705423091 is an apocalyptic number.

705423091 is a deficient number, since it is larger than the sum of its proper divisors (7896173).

705423091 is a wasteful number, since it uses less digits than its factorization.

705423091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 705423091 is about 26559.8021641728. The cubic root of 705423091 is about 890.1910505985.

Adding to 705423091 its reverse (190324507), we get a palindrome (895747598).

The spelling of 705423091 in words is "seven hundred five million, four hundred twenty-three thousand, ninety-one".