70782009 has 8 divisors (see below), whose sum is σ = 95065440. Its totient is φ = 46843296.

The previous prime is 70782007. The next prime is 70782013. The reversal of 70782009 is 90028707.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70782009 - 2¹ = 70782007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70782007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85699 + ... + 86520.

It is an arithmetic number, because the mean of its divisors is an integer number (11883180).

Almost surely, 2^70782009 is an apocalyptic number.

It is an amenable number.

70782009 is a deficient number, since it is larger than the sum of its proper divisors (24283431).

70782009 is a wasteful number, since it uses less digits than its factorization.

70782009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172359.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 70782009 is about 8413.2044430169. The cubic root of 70782009 is about 413.6575559784.

The spelling of 70782009 in words is "seventy million, seven hundred eighty-two thousand, nine".