70882813 has 2 divisors, whose sum is σ = 70882814. Its totient is φ = 70882812.

The previous prime is 70882807. The next prime is 70882817. The reversal of 70882813 is 31828807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70526404 + 356409 = 8398^2 + 597^2 .

It is an emirp because it is prime and its reverse (31828807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70882813 - 2¹⁷ = 70751741 is a prime.

It is equal to p_4166893 and since 70882813 and 4166893 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70882817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35441406 + 35441407.

It is an arithmetic number, because the mean of its divisors is an integer number (35441407).

Almost surely, 2^70882813 is an apocalyptic number.

It is an amenable number.

70882813 is a deficient number, since it is larger than the sum of its proper divisors (1).

70882813 is an equidigital number, since it uses as much as digits as its factorization.

70882813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 70882813 is about 8419.1931323613. The cubic root of 70882813 is about 413.8538325824.

It can be divided in two parts, 708 and 82813, that added together give a 4-th power (83521 = 17⁴).

The spelling of 70882813 in words is "seventy million, eight hundred eighty-two thousand, eight hundred thirteen".