70136530 has 8 divisors (see below), whose sum is σ = 126245772. Its totient is φ = 28054608.

The previous prime is 70136513. The next prime is 70136557. The reversal of 70136530 is 3563107.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65755881 + 4380649 = 8109^2 + 2093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 70136495 and 70136504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3506817 + ... + 3506836.

Almost surely, 2^70136530 is an apocalyptic number.

70136530 is a deficient number, since it is larger than the sum of its proper divisors (56109242).

70136530 is a wasteful number, since it uses less digits than its factorization.

70136530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013660.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 70136530 is about 8374.7555188196. The cubic root of 70136530 is about 412.3962983885.

Adding to 70136530 its reverse (3563107), we get a palindrome (73699637).

The spelling of 70136530 in words is "seventy million, one hundred thirty-six thousand, five hundred thirty".