70520349 has 4 divisors (see below), whose sum is σ = 94027136. Its totient is φ = 47013564.

The previous prime is 70520341. The next prime is 70520353. The reversal of 70520349 is 94302507.

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.

It is not a de Polignac number, because 70520349 - 2³ = 70520341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70520341) 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, 11753389 + ... + 11753394.

It is an arithmetic number, because the mean of its divisors is an integer number (23506784).

Almost surely, 2^70520349 is an apocalyptic number.

It is an amenable number.

70520349 is a deficient number, since it is larger than the sum of its proper divisors (23506787).

70520349 is a wasteful number, since it uses less digits than its factorization.

70520349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23506786.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 70520349 is about 8397.6394897614. The cubic root of 70520349 is about 413.1472036713.

The spelling of 70520349 in words is "seventy million, five hundred twenty thousand, three hundred forty-nine".