71907345 has 24 divisors (see below), whose sum is σ = 129257856. Its totient is φ = 38349936.

The previous prime is 71907307. The next prime is 71907389. The reversal of 71907345 is 54370917.

It is a happy number.

It is not a de Polignac number, because 71907345 - 2⁷ = 71907217 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28377 + ... + 30806.

It is an arithmetic number, because the mean of its divisors is an integer number (5385744).

Almost surely, 2^71907345 is an apocalyptic number.

It is an amenable number.

71907345 is a deficient number, since it is larger than the sum of its proper divisors (57350511).

71907345 is an equidigital number, since it uses as much as digits as its factorization.

71907345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59203 (or 59191 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 71907345 is about 8479.8198683698. The cubic root of 71907345 is about 415.8382341484.

It can be divided in two parts, 7190 and 7345, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 71907345 in words is "seventy-one million, nine hundred seven thousand, three hundred forty-five".