71287064 has 16 divisors (see below), whose sum is σ = 133996200. Its totient is φ = 35554752.

The previous prime is 71287063. The next prime is 71287087. The reversal of 71287064 is 46078217.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71287063) 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, 7622 + ... + 14165.

Almost surely, 2^71287064 is an apocalyptic number.

It is an amenable number.

71287064 is a deficient number, since it is larger than the sum of its proper divisors (62709136).

71287064 is a wasteful number, since it uses less digits than its factorization.

71287064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22202 (or 22198 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 71287064 is about 8443.1667045013. The cubic root of 71287064 is about 414.6390901018.

The spelling of 71287064 in words is "seventy-one million, two hundred eighty-seven thousand, sixty-four".