70137799 has 2 divisors, whose sum is σ = 70137800. Its totient is φ = 70137798.

The previous prime is 70137791. The next prime is 70137913. The reversal of 70137799 is 99773107.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70137799 - 2³ = 70137791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70137791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35068899 + 35068900.

It is an arithmetic number, because the mean of its divisors is an integer number (35068900).

Almost surely, 2^70137799 is an apocalyptic number.

70137799 is a deficient number, since it is larger than the sum of its proper divisors (1).

70137799 is an equidigital number, since it uses as much as digits as its factorization.

70137799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 70137799 is about 8374.8312818826. The cubic root of 70137799 is about 412.3987855743.

The spelling of 70137799 in words is "seventy million, one hundred thirty-seven thousand, seven hundred ninety-nine".