71761340 has 24 divisors (see below), whose sum is σ = 172227552. Its totient is φ = 24603840.

The previous prime is 71761331. The next prime is 71761379. The reversal of 71761340 is 4316717.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256151 + ... + 256430.

It is an arithmetic number, because the mean of its divisors is an integer number (7176148).

Almost surely, 2^71761340 is an apocalyptic number.

71761340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71761340 is an abundant number, since it is smaller than the sum of its proper divisors (100466212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71761340 is a wasteful number, since it uses less digits than its factorization.

71761340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512597 (or 512595 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 71761340 is about 8471.2065256373. The cubic root of 71761340 is about 415.5565957865.

The spelling of 71761340 in words is "seventy-one million, seven hundred sixty-one thousand, three hundred forty".