70517812 has 12 divisors (see below), whose sum is σ = 123866820. Its totient is φ = 35127296.

The previous prime is 70517809. The next prime is 70517831. The reversal of 70517812 is 21871507.

It is a happy number.

70517812 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 2 ways, for example, as 44036496 + 26481316 = 6636^2 + 5146^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31693 + ... + 33844.

It is an arithmetic number, because the mean of its divisors is an integer number (10322235).

Almost surely, 2^70517812 is an apocalyptic number.

It is an amenable number.

70517812 is a deficient number, since it is larger than the sum of its proper divisors (53349008).

70517812 is a wasteful number, since it uses less digits than its factorization.

70517812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65810 (or 65808 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 70517812 is about 8397.4884340498. The cubic root of 70517812 is about 413.1422492289.

The spelling of 70517812 in words is "seventy million, five hundred seventeen thousand, eight hundred twelve".