70205137 has 2 divisors, whose sum is σ = 70205138. Its totient is φ = 70205136.

The previous prime is 70205119. The next prime is 70205183. The reversal of 70205137 is 73150207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44408896 + 25796241 = 6664^2 + 5079^2 .

It is a cyclic number.

It is not a de Polignac number, because 70205137 - 2¹⁵ = 70172369 is a prime.

It is a super-2 number, since 2×70205137² = 9857522522377538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70205117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35102568 + 35102569.

It is an arithmetic number, because the mean of its divisors is an integer number (35102569).

Almost surely, 2^70205137 is an apocalyptic number.

It is an amenable number.

70205137 is a deficient number, since it is larger than the sum of its proper divisors (1).

70205137 is an equidigital number, since it uses as much as digits as its factorization.

70205137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 70205137 is about 8378.8505774957. The cubic root of 70205137 is about 412.5307221685.

The spelling of 70205137 in words is "seventy million, two hundred five thousand, one hundred thirty-seven".