701405905 has 4 divisors (see below), whose sum is σ = 841687092. Its totient is φ = 561124720.

The previous prime is 701405899. The next prime is 701405909. The reversal of 701405905 is 509504107.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 491242896 + 210163009 = 22164^2 + 14497^2 .

It is not a de Polignac number, because 701405905 - 2³ = 701405897 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (701405909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70140586 + ... + 70140595.

It is an arithmetic number, because the mean of its divisors is an integer number (210421773).

Almost surely, 2^701405905 is an apocalyptic number.

It is an amenable number.

701405905 is a deficient number, since it is larger than the sum of its proper divisors (140281187).

701405905 is a wasteful number, since it uses less digits than its factorization.

701405905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140281186.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 701405905 is about 26484.0688905614. The cubic root of 701405905 is about 888.4980369287.

The spelling of 701405905 in words is "seven hundred one million, four hundred five thousand, nine hundred five".