70136963 has 4 divisors (see below), whose sum is σ = 75532128. Its totient is φ = 64741800.

The previous prime is 70136947. The next prime is 70136981. The reversal of 70136963 is 36963107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36963107 = 307 ⋅120401.

It is a cyclic number.

It is not a de Polignac number, because 70136963 - 2⁴ = 70136947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70136903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2697563 + ... + 2697588.

It is an arithmetic number, because the mean of its divisors is an integer number (18883032).

Almost surely, 2^70136963 is an apocalyptic number.

70136963 is a deficient number, since it is larger than the sum of its proper divisors (5395165).

70136963 is a wasteful number, since it uses less digits than its factorization.

70136963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395164.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 70136963 is about 8374.7813702807. The cubic root of 70136963 is about 412.3971470534.

The spelling of 70136963 in words is "seventy million, one hundred thirty-six thousand, nine hundred sixty-three".