70239609 has 32 divisors (see below), whose sum is σ = 115409280. Its totient is φ = 41860800.

The previous prime is 70239577. The next prime is 70239623. The reversal of 70239609 is 90693207.

It is not a de Polignac number, because 70239609 - 2⁵ = 70239577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70239649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16179 + ... + 20055.

It is an arithmetic number, because the mean of its divisors is an integer number (3606540).

Almost surely, 2^70239609 is an apocalyptic number.

It is an amenable number.

70239609 is a deficient number, since it is larger than the sum of its proper divisors (45169671).

70239609 is a wasteful number, since it uses less digits than its factorization.

70239609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958 (or 3952 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 70239609 is about 8380.9074091055. The cubic root of 70239609 is about 412.5982311512.

The spelling of 70239609 in words is "seventy million, two hundred thirty-nine thousand, six hundred nine".