70389517 has 8 divisors (see below), whose sum is σ = 76864032. Its totient is φ = 63927600.

The previous prime is 70389511. The next prime is 70389521. The reversal of 70389517 is 71598307.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70389517 - 2¹¹ = 70387469 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 70389517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70389511) 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 7 ways as a sum of consecutive naturals, for example, 11542 + ... + 16552.

It is an arithmetic number, because the mean of its divisors is an integer number (9608004).

Almost surely, 2^70389517 is an apocalyptic number.

It is an amenable number.

70389517 is a deficient number, since it is larger than the sum of its proper divisors (6474515).

70389517 is a wasteful number, since it uses less digits than its factorization.

70389517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 70389517 is about 8389.8460653340. The cubic root of 70389517 is about 412.8915501037.

The spelling of 70389517 in words is "seventy million, three hundred eighty-nine thousand, five hundred seventeen".