71757061 has 4 divisors (see below), whose sum is σ = 72186912. Its totient is φ = 71327212.

The previous prime is 71757019. The next prime is 71757083. The reversal of 71757061 is 16075717.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71757061 - 2²⁵ = 38202629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71757461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214675 + ... + 215008.

It is an arithmetic number, because the mean of its divisors is an integer number (18046728).

Almost surely, 2^71757061 is an apocalyptic number.

It is an amenable number.

71757061 is a deficient number, since it is larger than the sum of its proper divisors (429851).

71757061 is a wasteful number, since it uses less digits than its factorization.

71757061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429850.

The product of its (nonzero) digits is 10290, while the sum is 34.

The square root of 71757061 is about 8470.9539604462. The cubic root of 71757061 is about 415.5483359908.

The spelling of 71757061 in words is "seventy-one million, seven hundred fifty-seven thousand, sixty-one".