70974539 has 4 divisors (see below), whose sum is σ = 71002680. Its totient is φ = 70946400.

The previous prime is 70974529. The next prime is 70974551. The reversal of 70974539 is 93547907.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93547907 = 47 ⋅1990381.

It is a cyclic number.

It is not a de Polignac number, because 70974539 - 2⁴ = 70974523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70974539.

It is not an unprimeable number, because it can be changed into a prime (70974529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9869 + ... + 15470.

It is an arithmetic number, because the mean of its divisors is an integer number (17750670).

Almost surely, 2^70974539 is an apocalyptic number.

70974539 is a deficient number, since it is larger than the sum of its proper divisors (28141).

70974539 is a wasteful number, since it uses less digits than its factorization.

70974539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28140.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 70974539 is about 8424.6388053139. The cubic root of 70974539 is about 414.0322716720.

The spelling of 70974539 in words is "seventy million, nine hundred seventy-four thousand, five hundred thirty-nine".