71420869 has 8 divisors (see below), whose sum is σ = 79396352. Its totient is φ = 63799920.

The previous prime is 71420831. The next prime is 71420873. The reversal of 71420869 is 96802417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71420869 - 2¹⁷ = 71289797 is a prime.

It is a super-2 number, since 2×71420869² = 10201881057430322, 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 (71420269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88209 + ... + 89014.

It is an arithmetic number, because the mean of its divisors is an integer number (9924544).

Almost surely, 2^71420869 is an apocalyptic number.

It is an amenable number.

71420869 is a deficient number, since it is larger than the sum of its proper divisors (7975483).

71420869 is a wasteful number, since it uses less digits than its factorization.

71420869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177267.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 71420869 is about 8451.0868531805. The cubic root of 71420869 is about 414.8983522279.

The spelling of 71420869 in words is "seventy-one million, four hundred twenty thousand, eight hundred sixty-nine".