70850831 has 4 divisors (see below), whose sum is σ = 70867992. Its totient is φ = 70833672.

The previous prime is 70850789. The next prime is 70850851. The reversal of 70850831 is 13805807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13805807 = 41 ⋅336727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70850831 is a prime.

It is a super-2 number, since 2×70850831² = 10039680506781122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70850851) 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, 1796 + ... + 12038.

It is an arithmetic number, because the mean of its divisors is an integer number (17716998).

Almost surely, 2^70850831 is an apocalyptic number.

70850831 is a deficient number, since it is larger than the sum of its proper divisors (17161).

70850831 is a wasteful number, since it uses less digits than its factorization.

70850831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17160.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 70850831 is about 8417.2935674123. The cubic root of 70850831 is about 413.7915802354.

The spelling of 70850831 in words is "seventy million, eight hundred fifty thousand, eight hundred thirty-one".