70782213 has 4 divisors (see below), whose sum is σ = 94376288. Its totient is φ = 47188140.

The previous prime is 70782211. The next prime is 70782233. The reversal of 70782213 is 31228707.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 70782213 - 2¹ = 70782211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70782211) 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, 11797033 + ... + 11797038.

It is an arithmetic number, because the mean of its divisors is an integer number (23594072).

Almost surely, 2^70782213 is an apocalyptic number.

It is an amenable number.

70782213 is a deficient number, since it is larger than the sum of its proper divisors (23594075).

70782213 is a wasteful number, since it uses less digits than its factorization.

70782213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23594074.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 70782213 is about 8413.2165668073. The cubic root of 70782213 is about 413.6579533772.

The spelling of 70782213 in words is "seventy million, seven hundred eighty-two thousand, two hundred thirteen".