70105137 has 4 divisors (see below), whose sum is σ = 93473520. Its totient is φ = 46736756.

The previous prime is 70105129. The next prime is 70105141. The reversal of 70105137 is 73150107.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73150107 = 3 ⋅24383369.

It is a cyclic number.

It is not a de Polignac number, because 70105137 - 2³ = 70105129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70105177) 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, 11684187 + ... + 11684192.

It is an arithmetic number, because the mean of its divisors is an integer number (23368380).

Almost surely, 2^70105137 is an apocalyptic number.

It is an amenable number.

70105137 is a deficient number, since it is larger than the sum of its proper divisors (23368383).

70105137 is a wasteful number, since it uses less digits than its factorization.

70105137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23368382.

The product of its (nonzero) digits is 735, while the sum is 24.

The square root of 70105137 is about 8372.8810453750. The cubic root of 70105137 is about 412.3347598956.

The spelling of 70105137 in words is "seventy million, one hundred five thousand, one hundred thirty-seven".