71830957 has 4 divisors (see below), whose sum is σ = 78361056. Its totient is φ = 65300860.

The previous prime is 71830943. The next prime is 71830961. The reversal of 71830957 is 75903817.

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 71830957 - 2¹¹ = 71828909 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 (71830657) 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, 3265033 + ... + 3265054.

It is an arithmetic number, because the mean of its divisors is an integer number (19590264).

Almost surely, 2^71830957 is an apocalyptic number.

It is an amenable number.

71830957 is a deficient number, since it is larger than the sum of its proper divisors (6530099).

71830957 is a wasteful number, since it uses less digits than its factorization.

71830957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530098.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 71830957 is about 8475.3145664335. The cubic root of 71830957 is about 415.6909320621.

The spelling of 71830957 in words is "seventy-one million, eight hundred thirty thousand, nine hundred fifty-seven".