71763945 has 16 divisors (see below), whose sum is σ = 125260992. Its totient is φ = 34794560.

The previous prime is 71763941. The next prime is 71763949. The reversal of 71763945 is 54936717.

It is an interprime number because it is at equal distance from previous prime (71763941) and next prime (71763949).

It is not a de Polignac number, because 71763945 - 2² = 71763941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71763897 and 71763906.

It is not an unprimeable number, because it can be changed into a prime (71763941) 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 15 ways as a sum of consecutive naturals, for example, 217302 + ... + 217631.

It is an arithmetic number, because the mean of its divisors is an integer number (7828812).

Almost surely, 2^71763945 is an apocalyptic number.

It is an amenable number.

71763945 is a deficient number, since it is larger than the sum of its proper divisors (53497047).

71763945 is a wasteful number, since it uses less digits than its factorization.

71763945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434952.

The product of its digits is 158760, while the sum is 42.

The square root of 71763945 is about 8471.3602803800. The cubic root of 71763945 is about 415.5616240827.

The spelling of 71763945 in words is "seventy-one million, seven hundred sixty-three thousand, nine hundred forty-five".