70357523 has 4 divisors (see below), whose sum is σ = 71205288. Its totient is φ = 69509760.

The previous prime is 70357477. The next prime is 70357579. The reversal of 70357523 is 32575307.

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

It is a cyclic number.

It is not a de Polignac number, because 70357523 - 2⁶ = 70357459 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 70357523.

It is not an unprimeable number, because it can be changed into a prime (70357123) 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, 423758 + ... + 423923.

It is an arithmetic number, because the mean of its divisors is an integer number (17801322).

Almost surely, 2^70357523 is an apocalyptic number.

70357523 is a deficient number, since it is larger than the sum of its proper divisors (847765).

70357523 is an equidigital number, since it uses as much as digits as its factorization.

70357523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847764.

The product of its (nonzero) digits is 22050, while the sum is 32.

The square root of 70357523 is about 8387.9391390257. The cubic root of 70357523 is about 412.8289837124.

The spelling of 70357523 in words is "seventy million, three hundred fifty-seven thousand, five hundred twenty-three".