1401605005 has 8 divisors (see below), whose sum is σ = 1693215000. Its totient is φ = 1113758016.

The previous prime is 1401604961. The next prime is 1401605011. The reversal of 1401605005 is 5005061041.

It can be written as a sum of positive squares in 4 ways, for example, as 2022084 + 1399582921 = 1422^2 + 37411^2 .

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 1401605005 - 2¹³ = 1401596813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939930 + ... + 941419.

It is an arithmetic number, because the mean of its divisors is an integer number (211651875).

Almost surely, 2^1401605005 is an apocalyptic number.

It is an amenable number.

1401605005 is a deficient number, since it is larger than the sum of its proper divisors (291609995).

1401605005 is a wasteful number, since it uses less digits than its factorization.

1401605005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881503.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1401605005 is about 37438.0155056328. The cubic root of 1401605005 is about 1119.1162791390.

Adding to 1401605005 its reverse (5005061041), we get a palindrome (6406666046).

The spelling of 1401605005 in words is "one billion, four hundred one million, six hundred five thousand, five".