70818413 has 8 divisors (see below), whose sum is σ = 75070008. Its totient is φ = 66576384.

The previous prime is 70818409. The next prime is 70818421. The reversal of 70818413 is 31481807.

It can be written as a sum of positive squares in 4 ways, for example, as 6770404 + 64048009 = 2602^2 + 8003^2 .

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 70818413 - 2² = 70818409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70818413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70818313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17795 + ... + 21407.

It is an arithmetic number, because the mean of its divisors is an integer number (9383751).

Almost surely, 2^70818413 is an apocalyptic number.

It is an amenable number.

70818413 is a deficient number, since it is larger than the sum of its proper divisors (4251595).

70818413 is a wasteful number, since it uses less digits than its factorization.

70818413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4783.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 70818413 is about 8415.3676687356. The cubic root of 70818413 is about 413.7284601012.

The spelling of 70818413 in words is "seventy million, eight hundred eighteen thousand, four hundred thirteen".