70684225 has 6 divisors (see below), whose sum is σ = 87648470. Its totient is φ = 56547360.

The previous prime is 70684213. The next prime is 70684241. The reversal of 70684225 is 52248607.

It can be written as a sum of positive squares in 3 ways, for example, as 4879681 + 65804544 = 2209^2 + 8112^2 .

It is not a de Polignac number, because 70684225 - 2¹⁵ = 70651457 is a prime.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1413660 + ... + 1413709.

Almost surely, 2^70684225 is an apocalyptic number.

It is an amenable number.

70684225 is a deficient number, since it is larger than the sum of its proper divisors (16964245).

70684225 is a wasteful number, since it uses less digits than its factorization.

70684225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827379 (or 2827374 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 70684225 is about 8407.3910935557. The cubic root of 70684225 is about 413.4669815095.

The spelling of 70684225 in words is "seventy million, six hundred eighty-four thousand, two hundred twenty-five".