70509903 has 16 divisors (see below), whose sum is σ = 97708032. Its totient is φ = 45180000.

The previous prime is 70509899. The next prime is 70509937. The reversal of 70509903 is 30990507.

It is not a de Polignac number, because 70509903 - 2² = 70509899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70509953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11533 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (6106752).

Almost surely, 2^70509903 is an apocalyptic number.

70509903 is a deficient number, since it is larger than the sum of its proper divisors (27198129).

70509903 is a wasteful number, since it uses less digits than its factorization.

70509903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206.

The product of its (nonzero) digits is 8505, while the sum is 33.

The square root of 70509903 is about 8397.0175062340. The cubic root of 70509903 is about 413.1268031823.

The spelling of 70509903 in words is "seventy million, five hundred nine thousand, nine hundred three".