70131769 has 2 divisors, whose sum is σ = 70131770. Its totient is φ = 70131768.

The previous prime is 70131751. The next prime is 70131791. The reversal of 70131769 is 96713107.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35557369 + 34574400 = 5963^2 + 5880^2 .

It is an emirp because it is prime and its reverse (96713107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70131769 - 2¹⁹ = 69607481 is a prime.

It is a super-2 number, since 2×70131769² = 9836930046138722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70131709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35065884 + 35065885.

It is an arithmetic number, because the mean of its divisors is an integer number (35065885).

Almost surely, 2^70131769 is an apocalyptic number.

It is an amenable number.

70131769 is a deficient number, since it is larger than the sum of its proper divisors (1).

70131769 is an equidigital number, since it uses as much as digits as its factorization.

70131769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 70131769 is about 8374.4712668920. The cubic root of 70131769 is about 412.3869667644.

The spelling of 70131769 in words is "seventy million, one hundred thirty-one thousand, seven hundred sixty-nine".