70559999 has 16 divisors (see below), whose sum is σ = 75411456. Its totient is φ = 65901600.

The previous prime is 70559971. The next prime is 70560011. The reversal of 70559999 is 99995507.

It is a Cunningham number, because it is equal to 8400²-1.

It is a cyclic number.

It is not a de Polignac number, because 70559999 - 2²⁰ = 69511423 is a prime.

It is a Duffinian number.

70559999 is a modest number, since divided by 9999 gives 7055 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 70559999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70559899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260234 + ... + 260504.

It is an arithmetic number, because the mean of its divisors is an integer number (4713216).

Almost surely, 2^70559999 is an apocalyptic number.

70559999 is a deficient number, since it is larger than the sum of its proper divisors (4851457).

70559999 is a wasteful number, since it uses less digits than its factorization.

70559999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 70559999 is about 8399.9999404762. Note that the first 4 decimals coincide. The cubic root of 70559999 is about 413.2246197065.

The spelling of 70559999 in words is "seventy million, five hundred fifty-nine thousand, nine hundred ninety-nine".