70099537 has 4 divisors (see below), whose sum is σ = 70131636. Its totient is φ = 70067440.

The previous prime is 70099529. The next prime is 70099567. The reversal of 70099537 is 73599007.

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 38638656 + 31460881 = 6216^2 + 5609^2 .

It is a cyclic number.

It is not a de Polignac number, because 70099537 - 2³ = 70099529 is a prime.

It is a super-3 number, since 3×70099537³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 70099537.

It is not an unprimeable number, because it can be changed into a prime (70099567) 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, 12514 + ... + 17227.

It is an arithmetic number, because the mean of its divisors is an integer number (17532909).

Almost surely, 2^70099537 is an apocalyptic number.

It is an amenable number.

70099537 is a deficient number, since it is larger than the sum of its proper divisors (32099).

70099537 is a wasteful number, since it uses less digits than its factorization.

70099537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32098.

The product of its (nonzero) digits is 59535, while the sum is 40.

The square root of 70099537 is about 8372.5466257286. The cubic root of 70099537 is about 412.3237804998.

The spelling of 70099537 in words is "seventy million, ninety-nine thousand, five hundred thirty-seven".