70519993 has 4 divisors (see below), whose sum is σ = 70672768. Its totient is φ = 70367220.

The previous prime is 70519991. The next prime is 70519997. The reversal of 70519993 is 39991507.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39991507 = 613 ⋅65239.

It is a cyclic number.

It is not a de Polignac number, because 70519993 - 2¹ = 70519991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70519991) 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, 75693 + ... + 76618.

It is an arithmetic number, because the mean of its divisors is an integer number (17668192).

Almost surely, 2^70519993 is an apocalyptic number.

It is an amenable number.

70519993 is a deficient number, since it is larger than the sum of its proper divisors (152775).

70519993 is a wasteful number, since it uses less digits than its factorization.

70519993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152774.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 70519993 is about 8397.6182933020. The cubic root of 70519993 is about 413.1465084551.

The spelling of 70519993 in words is "seventy million, five hundred nineteen thousand, nine hundred ninety-three".