71486957 has 2 divisors, whose sum is σ = 71486958. Its totient is φ = 71486956.

The previous prime is 71486951. The next prime is 71486971. The reversal of 71486957 is 75968417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 7070281 = 8026^2 + 2659^2 .

It is a cyclic number.

It is not a de Polignac number, because 71486957 - 2¹⁰ = 71485933 is a prime.

It is a super-2 number, since 2×71486957² = 10220770042239698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71486951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35743478 + 35743479.

It is an arithmetic number, because the mean of its divisors is an integer number (35743479).

Almost surely, 2^71486957 is an apocalyptic number.

It is an amenable number.

71486957 is a deficient number, since it is larger than the sum of its proper divisors (1).

71486957 is an equidigital number, since it uses as much as digits as its factorization.

71486957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 47.

The square root of 71486957 is about 8454.9959787099. The cubic root of 71486957 is about 415.0262856530.

The spelling of 71486957 in words is "seventy-one million, four hundred eighty-six thousand, nine hundred fifty-seven".