70670681 has 2 divisors, whose sum is σ = 70670682. Its totient is φ = 70670680.

The previous prime is 70670641. The next prime is 70670687. The reversal of 70670681 is 18607607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52693081 + 17977600 = 7259^2 + 4240^2 .

It is a cyclic number.

It is not a de Polignac number, because 70670681 - 2¹⁸ = 70408537 is a prime.

It is a super-2 number, since 2×70670681² = 9988690306007522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70670687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35335340 + 35335341.

It is an arithmetic number, because the mean of its divisors is an integer number (35335341).

Almost surely, 2^70670681 is an apocalyptic number.

It is an amenable number.

70670681 is a deficient number, since it is larger than the sum of its proper divisors (1).

70670681 is an equidigital number, since it uses as much as digits as its factorization.

70670681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 70670681 is about 8406.5855732277. The cubic root of 70670681 is about 413.4405713050.

The spelling of 70670681 in words is "seventy million, six hundred seventy thousand, six hundred eighty-one".