71423764 has 12 divisors (see below), whose sum is σ = 128370004. Its totient is φ = 34746624.

The previous prime is 71423753. The next prime is 71423767. The reversal of 71423764 is 46732417.

It can be written as a sum of positive squares in 2 ways, for example, as 48191364 + 23232400 = 6942^2 + 4820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71423767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241149 + ... + 241444.

Almost surely, 2^71423764 is an apocalyptic number.

71423764 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

71423764 is a deficient number, since it is larger than the sum of its proper divisors (56946240).

71423764 is a wasteful number, since it uses less digits than its factorization.

71423764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482634 (or 482632 counting only the distinct ones).

The product of its digits is 28224, while the sum is 34.

The square root of 71423764 is about 8451.2581311897. The cubic root of 71423764 is about 414.9039580334.

The spelling of 71423764 in words is "seventy-one million, four hundred twenty-three thousand, seven hundred sixty-four".