70385539 has 16 divisors (see below), whose sum is σ = 82798848. Its totient is φ = 58578912.

The previous prime is 70385533. The next prime is 70385573. The reversal of 70385539 is 93558307.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-70385539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70385533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58704 + ... + 59890.

It is an arithmetic number, because the mean of its divisors is an integer number (5174928).

Almost surely, 2^70385539 is an apocalyptic number.

70385539 is a deficient number, since it is larger than the sum of its proper divisors (12413309).

70385539 is a wasteful number, since it uses less digits than its factorization.

70385539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 70385539 is about 8389.6089896967. The cubic root of 70385539 is about 412.8837718928.

It can be divided in two parts, 703855 and 39, that multiplied together give a triangular number (27450345 = T₇₄₀₉).

The spelling of 70385539 in words is "seventy million, three hundred eighty-five thousand, five hundred thirty-nine".