70486809 has 4 divisors (see below), whose sum is σ = 93982416. Its totient is φ = 46991204.

The previous prime is 70486783. The next prime is 70486817. The reversal of 70486809 is 90868407.

It is a happy number.

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 70486809 - 2¹⁷ = 70355737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70484809) 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, 11747799 + ... + 11747804.

It is an arithmetic number, because the mean of its divisors is an integer number (23495604).

Almost surely, 2^70486809 is an apocalyptic number.

It is an amenable number.

70486809 is a deficient number, since it is larger than the sum of its proper divisors (23495607).

70486809 is a wasteful number, since it uses less digits than its factorization.

70486809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23495606.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 70486809 is about 8395.6422625074. The cubic root of 70486809 is about 413.0816946619.

The spelling of 70486809 in words is "seventy million, four hundred eighty-six thousand, eight hundred nine".