70812001 has 4 divisors (see below), whose sum is σ = 76259092. Its totient is φ = 65364912.

The previous prime is 70811999. The next prime is 70812011. The reversal of 70812001 is 10021807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10021807 = 389 ⋅25763.

It can be written as a sum of positive squares in 2 ways, for example, as 23270976 + 47541025 = 4824^2 + 6895^2 .

It is a cyclic number.

It is not a de Polignac number, because 70812001 - 2¹ = 70811999 is a prime.

It is a super-3 number, since 3×70812001³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70812001.

It is not an unprimeable number, because it can be changed into a prime (70812011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2723526 + ... + 2723551.

It is an arithmetic number, because the mean of its divisors is an integer number (19064773).

Almost surely, 2^70812001 is an apocalyptic number.

It is an amenable number.

70812001 is a deficient number, since it is larger than the sum of its proper divisors (5447091).

70812001 is a wasteful number, since it uses less digits than its factorization.

70812001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447090.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 70812001 is about 8414.9866904232. The cubic root of 70812001 is about 413.7159732029.

Adding to 70812001 its reverse (10021807), we get a palindrome (80833808).

The spelling of 70812001 in words is "seventy million, eight hundred twelve thousand, one".