70345969 has 2 divisors, whose sum is σ = 70345970. Its totient is φ = 70345968.

The previous prime is 70345943. The next prime is 70345987. The reversal of 70345969 is 96954307.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 1787569 = 8280^2 + 1337^2 .

It is a cyclic number.

It is not a de Polignac number, because 70345969 - 2¹¹ = 70343921 is a prime.

It is a super-2 number, since 2×70345969² = 9897110709097922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70345369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35172984 + 35172985.

It is an arithmetic number, because the mean of its divisors is an integer number (35172985).

Almost surely, 2^70345969 is an apocalyptic number.

It is an amenable number.

70345969 is a deficient number, since it is larger than the sum of its proper divisors (1).

70345969 is an equidigital number, since it uses as much as digits as its factorization.

70345969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 70345969 is about 8387.2503837670. The cubic root of 70345969 is about 412.8063844366.

The spelling of 70345969 in words is "seventy million, three hundred forty-five thousand, nine hundred sixty-nine".