70900217 has 4 divisors (see below), whose sum is σ = 75070836. Its totient is φ = 66729600.

The previous prime is 70900211. The next prime is 70900223. The reversal of 70900217 is 71200907.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (70900211) and next prime (70900223).

It can be written as a sum of positive squares in 2 ways, for example, as 33396841 + 37503376 = 5779^2 + 6124^2 .

It is a cyclic number.

It is not a de Polignac number, because 70900217 - 2¹⁰ = 70899193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70900211) 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, 2085284 + ... + 2085317.

It is an arithmetic number, because the mean of its divisors is an integer number (18767709).

Almost surely, 2^70900217 is an apocalyptic number.

It is an amenable number.

70900217 is a deficient number, since it is larger than the sum of its proper divisors (4170619).

70900217 is a wasteful number, since it uses less digits than its factorization.

70900217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170618.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 70900217 is about 8420.2266596571. The cubic root of 70900217 is about 413.8877012660.

It can be divided in two parts, 70900 and 217, that added together give a palindrome (71117).

The spelling of 70900217 in words is "seventy million, nine hundred thousand, two hundred seventeen".