70100865 has 12 divisors (see below), whose sum is σ = 121508244. Its totient is φ = 37387104.

The previous prime is 70100813. The next prime is 70100929. The reversal of 70100865 is 56800107.

70100865 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 2 ways, for example, as 45805824 + 24295041 = 6768^2 + 4929^2 .

It is not a de Polignac number, because 70100865 - 2¹² = 70096769 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778854 + ... + 778943.

It is an arithmetic number, because the mean of its divisors is an integer number (10125687).

Almost surely, 2^70100865 is an apocalyptic number.

It is an amenable number.

70100865 is a deficient number, since it is larger than the sum of its proper divisors (51407379).

70100865 is a wasteful number, since it uses less digits than its factorization.

70100865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557808 (or 1557805 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 70100865 is about 8372.6259321673. The cubic root of 70100865 is about 412.3263842380.

The spelling of 70100865 in words is "seventy million, one hundred thousand, eight hundred sixty-five".