70709149 has 4 divisors (see below), whose sum is σ = 80810464. Its totient is φ = 60607836.

The previous prime is 70709141. The next prime is 70709173. The reversal of 70709149 is 94190707.

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: 94190707 = 13 ⋅7245439.

It is a cyclic number.

It is not a de Polignac number, because 70709149 - 2³ = 70709141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70709141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5050647 + ... + 5050660.

It is an arithmetic number, because the mean of its divisors is an integer number (20202616).

Almost surely, 2^70709149 is an apocalyptic number.

It is an amenable number.

70709149 is a deficient number, since it is larger than the sum of its proper divisors (10101315).

70709149 is a wasteful number, since it uses less digits than its factorization.

70709149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101314.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 70709149 is about 8408.8732301064. The cubic root of 70709149 is about 413.5155733985.

The spelling of 70709149 in words is "seventy million, seven hundred nine thousand, one hundred forty-nine".