71454987 has 16 divisors (see below), whose sum is σ = 106008480. Its totient is φ = 47569536.

The previous prime is 71454983. The next prime is 71455019. The reversal of 71454987 is 78945417.

It is a happy number.

It is not a de Polignac number, because 71454987 - 2² = 71454983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71454983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24343 + ... + 27119.

It is an arithmetic number, because the mean of its divisors is an integer number (6625530).

Almost surely, 2^71454987 is an apocalyptic number.

71454987 is a deficient number, since it is larger than the sum of its proper divisors (34553493).

71454987 is a wasteful number, since it uses less digits than its factorization.

71454987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739 (or 3733 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 71454987 is about 8453.1051691080. The cubic root of 71454987 is about 414.9644078442.

The spelling of 71454987 in words is "seventy-one million, four hundred fifty-four thousand, nine hundred eighty-seven".