70397699 has 2 divisors, whose sum is σ = 70397700. Its totient is φ = 70397698.

The previous prime is 70397669. The next prime is 70397741. The reversal of 70397699 is 99679307.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70397699 is a prime.

It is not a weakly prime, because it can be changed into another prime (70397609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35198849 + 35198850.

It is an arithmetic number, because the mean of its divisors is an integer number (35198850).

Almost surely, 2^70397699 is an apocalyptic number.

70397699 is a deficient number, since it is larger than the sum of its proper divisors (1).

70397699 is an equidigital number, since it uses as much as digits as its factorization.

70397699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 70397699 is about 8390.3336644021. Note that the first 3 decimals coincide. The cubic root of 70397699 is about 412.9075475037.

The spelling of 70397699 in words is "seventy million, three hundred ninety-seven thousand, six hundred ninety-nine".