70017505 has 24 divisors (see below), whose sum is σ = 88438392. Its totient is φ = 53194752.

The previous prime is 70017503. The next prime is 70017517. The reversal of 70017505 is 50571007.

70017505 = 40² + 41² + ... + 594².

It can be written as a sum of positive squares in 12 ways, for example, as 61009 + 69956496 = 247^2 + 8364^2 .

It is not a de Polignac number, because 70017505 - 2¹ = 70017503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70017505.

It is not an unprimeable number, because it can be changed into a prime (70017503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 362689 + ... + 362881.

It is an arithmetic number, because the mean of its divisors is an integer number (3684933).

Almost surely, 2^70017505 is an apocalyptic number.

It is an amenable number.

70017505 is a deficient number, since it is larger than the sum of its proper divisors (18420887).

70017505 is a wasteful number, since it uses less digits than its factorization.

70017505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 25.

The square root of 70017505 is about 8367.6463237878. The cubic root of 70017505 is about 412.1628809744.

The spelling of 70017505 in words is "seventy million, seventeen thousand, five hundred five".