70700381 has 2 divisors, whose sum is σ = 70700382. Its totient is φ = 70700380.

The previous prime is 70700363. The next prime is 70700389. The reversal of 70700381 is 18300707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36711481 + 33988900 = 6059^2 + 5830^2 .

It is a cyclic number.

It is not a de Polignac number, because 70700381 - 2¹⁰ = 70699357 is a prime.

It is a super-2 number, since 2×70700381² = 9997087747090322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70700381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70700389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35350190 + 35350191.

It is an arithmetic number, because the mean of its divisors is an integer number (35350191).

Almost surely, 2^70700381 is an apocalyptic number.

It is an amenable number.

70700381 is a deficient number, since it is larger than the sum of its proper divisors (1).

70700381 is an equidigital number, since it uses as much as digits as its factorization.

70700381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 70700381 is about 8408.3518599069. The cubic root of 70700381 is about 413.4984805872.

The spelling of 70700381 in words is "seventy million, seven hundred thousand, three hundred eighty-one".