70000537 has 4 divisors (see below), whose sum is σ = 70188580. Its totient is φ = 69812496.

The previous prime is 70000493. The next prime is 70000549. The reversal of 70000537 is 73500007.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19149376 + 50851161 = 4376^2 + 7131^2 .

It is a cyclic number.

It is not a de Polignac number, because 70000537 - 2⁷ = 70000409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70000037) 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 3 ways as a sum of consecutive naturals, for example, 93462 + ... + 94207.

It is an arithmetic number, because the mean of its divisors is an integer number (17547145).

Almost surely, 2^70000537 is an apocalyptic number.

It is an amenable number.

70000537 is a deficient number, since it is larger than the sum of its proper divisors (188043).

70000537 is a wasteful number, since it uses less digits than its factorization.

70000537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188042.

The product of its (nonzero) digits is 735, while the sum is 22.

The square root of 70000537 is about 8366.6323571674. The cubic root of 70000537 is about 412.1295838497.

The spelling of 70000537 in words is "seventy million, five hundred thirty-seven", and thus it is an aban number.