71458649 has 8 divisors (see below), whose sum is σ = 73056480. Its totient is φ = 69876576.

The previous prime is 71458643. The next prime is 71458663. The reversal of 71458649 is 94685417.

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 71458649 - 2²⁴ = 54681433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71458643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5477 + ... + 13149.

It is an arithmetic number, because the mean of its divisors is an integer number (9132060).

Almost surely, 2^71458649 is an apocalyptic number.

It is an amenable number.

71458649 is a deficient number, since it is larger than the sum of its proper divisors (1597831).

71458649 is a wasteful number, since it uses less digits than its factorization.

71458649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7879.

The product of its digits is 241920, while the sum is 44.

The square root of 71458649 is about 8453.3217731256. The cubic root of 71458649 is about 414.9714965666.

The spelling of 71458649 in words is "seventy-one million, four hundred fifty-eight thousand, six hundred forty-nine".