70831849 has 4 divisors (see below), whose sum is σ = 77271120. Its totient is φ = 64392580.

The previous prime is 70831841. The next prime is 70831853. The reversal of 70831849 is 94813807.

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: 94813807 = 11 ⋅8619437.

It is a cyclic number.

It is not a de Polignac number, because 70831849 - 2³ = 70831841 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70831841) 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, 3219619 + ... + 3219640.

It is an arithmetic number, because the mean of its divisors is an integer number (19317780).

Almost surely, 2^70831849 is an apocalyptic number.

It is an amenable number.

70831849 is a deficient number, since it is larger than the sum of its proper divisors (6439271).

70831849 is a wasteful number, since it uses less digits than its factorization.

70831849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6439270.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 70831849 is about 8416.1659322996. The cubic root of 70831849 is about 413.7546232784.

The spelling of 70831849 in words is "seventy million, eight hundred thirty-one thousand, eight hundred forty-nine".