70166969 has 2 divisors, whose sum is σ = 70166970. Its totient is φ = 70166968.

The previous prime is 70166953. The next prime is 70167029. The reversal of 70166969 is 96966107.

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., 52417600 + 17749369 = 7240^2 + 4213^2 .

It is a cyclic number.

It is not a de Polignac number, because 70166969 - 2⁴ = 70166953 is a prime.

It is a super-2 number, since 2×70166969² = 9846807077293922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70166269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35083484 + 35083485.

It is an arithmetic number, because the mean of its divisors is an integer number (35083485).

Almost surely, 2^70166969 is an apocalyptic number.

It is an amenable number.

70166969 is a deficient number, since it is larger than the sum of its proper divisors (1).

70166969 is an equidigital number, since it uses as much as digits as its factorization.

70166969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 70166969 is about 8376.5726284680. The cubic root of 70166969 is about 412.4559492599.

The spelling of 70166969 in words is "seventy million, one hundred sixty-six thousand, nine hundred sixty-nine".