70612009 has 8 divisors (see below), whose sum is σ = 76322120. Its totient is φ = 64941696.

The previous prime is 70611973. The next prime is 70612027. The reversal of 70612009 is 90021607.

It can be written as a sum of positive squares in 4 ways, for example, as 10208025 + 60403984 = 3195^2 + 7772^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70612009 - 2¹³ = 70603817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70612049) 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, 6204 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (9540265).

Almost surely, 2^70612009 is an apocalyptic number.

It is an amenable number.

70612009 is a deficient number, since it is larger than the sum of its proper divisors (5710111).

70612009 is a wasteful number, since it uses less digits than its factorization.

70612009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19899.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 70612009 is about 8403.0952035545. The cubic root of 70612009 is about 413.3261244985.

The spelling of 70612009 in words is "seventy million, six hundred twelve thousand, nine".