70018505 has 8 divisors (see below), whose sum is σ = 84125832. Its totient is φ = 55945728.

The previous prime is 70018483. The next prime is 70018511. The reversal of 70018505 is 50581007.

It can be written as a sum of positive squares in 4 ways, for example, as 446224 + 69572281 = 668^2 + 8341^2 .

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 70018505 - 2¹⁰ = 70017481 is a prime.

It is a Duffinian 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, 3944 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (10515729).

Almost surely, 2^70018505 is an apocalyptic number.

It is an amenable number.

70018505 is a deficient number, since it is larger than the sum of its proper divisors (14107327).

70018505 is a wasteful number, since it uses less digits than its factorization.

70018505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17275.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 70018505 is about 8367.7060775340. The cubic root of 70018505 is about 412.1648431547.

The spelling of 70018505 in words is "seventy million, eighteen thousand, five hundred five".