70903509 has 4 divisors (see below), whose sum is σ = 94538016. Its totient is φ = 47269004.

The previous prime is 70903499. The next prime is 70903529. The reversal of 70903509 is 90530907.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70903509 - 2⁴ = 70903493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70903509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70903529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11817249 + ... + 11817254.

It is an arithmetic number, because the mean of its divisors is an integer number (23634504).

Almost surely, 2^70903509 is an apocalyptic number.

It is an amenable number.

70903509 is a deficient number, since it is larger than the sum of its proper divisors (23634507).

70903509 is a wasteful number, since it uses less digits than its factorization.

70903509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23634506.

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

The square root of 70903509 is about 8420.4221390617. The cubic root of 70903509 is about 413.8941069691.

The spelling of 70903509 in words is "seventy million, nine hundred three thousand, five hundred nine".