70057109 has 4 divisors (see below), whose sum is σ = 70115616. Its totient is φ = 69998604.

The previous prime is 70057067. The next prime is 70057129. The reversal of 70057109 is 90175007.

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 a de Polignac number, because none of the positive numbers 2^k-70057109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70057129) 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, 27419 + ... + 29864.

It is an arithmetic number, because the mean of its divisors is an integer number (17528904).

Almost surely, 2^70057109 is an apocalyptic number.

It is an amenable number.

70057109 is a deficient number, since it is larger than the sum of its proper divisors (58507).

70057109 is a wasteful number, since it uses less digits than its factorization.

70057109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58506.

The product of its (nonzero) digits is 2205, while the sum is 29.

The square root of 70057109 is about 8370.0124850564. The cubic root of 70057109 is about 412.2405768880.

The spelling of 70057109 in words is "seventy million, fifty-seven thousand, one hundred nine".