71450643 has 16 divisors (see below), whose sum is σ = 110042496. Its totient is φ = 40755840.

The previous prime is 71450611. The next prime is 71450683. The reversal of 71450643 is 34605417.

It is not a de Polignac number, because 71450643 - 2⁵ = 71450611 is a prime.

It is a super-2 number, since 2×71450643² = 10210388770226898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71450643.

It is not an unprimeable number, because it can be changed into a prime (71450683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63121 + ... + 64242.

It is an arithmetic number, because the mean of its divisors is an integer number (6877656).

Almost surely, 2^71450643 is an apocalyptic number.

71450643 is a deficient number, since it is larger than the sum of its proper divisors (38591853).

71450643 is a wasteful number, since it uses less digits than its factorization.

71450643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127394.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 71450643 is about 8452.8482182043. The cubic root of 71450643 is about 414.9559986251.

The spelling of 71450643 in words is "seventy-one million, four hundred fifty thousand, six hundred forty-three".