71256707 has 18 divisors (see below), whose sum is σ = 80005428. Its totient is φ = 63442368.

The previous prime is 71256671. The next prime is 71256727. The reversal of 71256707 is 70765217.

It is not a de Polignac number, because 71256707 - 2⁶ = 71256643 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71256727) 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 17 ways as a sum of consecutive naturals, for example, 103988 + ... + 104670.

It is an arithmetic number, because the mean of its divisors is an integer number (4444746).

Almost surely, 2^71256707 is an apocalyptic number.

71256707 is a deficient number, since it is larger than the sum of its proper divisors (8748721).

71256707 is a wasteful number, since it uses less digits than its factorization.

71256707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 71256707 is about 8441.3687871103. The cubic root of 71256707 is about 414.5802248823.

The spelling of 71256707 in words is "seventy-one million, two hundred fifty-six thousand, seven hundred seven".