70691603 has 2 divisors, whose sum is σ = 70691604. Its totient is φ = 70691602.

The previous prime is 70691587. The next prime is 70691611. The reversal of 70691603 is 30619607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70691603 - 2⁴ = 70691587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70691603.

It is not a weakly prime, because it can be changed into another prime (70691653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35345801 + 35345802.

It is an arithmetic number, because the mean of its divisors is an integer number (35345802).

Almost surely, 2^70691603 is an apocalyptic number.

70691603 is a deficient number, since it is larger than the sum of its proper divisors (1).

70691603 is an equidigital number, since it uses as much as digits as its factorization.

70691603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 70691603 is about 8407.8298626935. The cubic root of 70691603 is about 413.4813668657.

The spelling of 70691603 in words is "seventy million, six hundred ninety-one thousand, six hundred three".