70206137 has 8 divisors (see below), whose sum is σ = 71656200. Its totient is φ = 68770944.

The previous prime is 70206119. The next prime is 70206167. The reversal of 70206137 is 73160207.

It can be written as a sum of positive squares in 4 ways, for example, as 11162281 + 59043856 = 3341^2 + 7684^2 .

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 70206137 - 2⁸ = 70205881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70206167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6083 + ... + 13319.

It is an arithmetic number, because the mean of its divisors is an integer number (8957025).

Almost surely, 2^70206137 is an apocalyptic number.

It is an amenable number.

70206137 is a deficient number, since it is larger than the sum of its proper divisors (1450063).

70206137 is a wasteful number, since it uses less digits than its factorization.

70206137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7435.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 70206137 is about 8378.9102513394. The cubic root of 70206137 is about 412.5326808512.

The spelling of 70206137 in words is "seventy million, two hundred six thousand, one hundred thirty-seven".