71470657 has 2 divisors, whose sum is σ = 71470658. Its totient is φ = 71470656.

The previous prime is 71470507. The next prime is 71470661. The reversal of 71470657 is 75607417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70829056 + 641601 = 8416^2 + 801^2 .

It is a cyclic number.

It is not a de Polignac number, because 71470657 - 2¹⁵ = 71437889 is a prime.

It is not a weakly prime, because it can be changed into another prime (71470697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35735328 + 35735329.

It is an arithmetic number, because the mean of its divisors is an integer number (35735329).

Almost surely, 2^71470657 is an apocalyptic number.

It is an amenable number.

71470657 is a deficient number, since it is larger than the sum of its proper divisors (1).

71470657 is an equidigital number, since it uses as much as digits as its factorization.

71470657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 71470657 is about 8454.0319966274. The cubic root of 71470657 is about 414.9947393730.

It can be divided in two parts, 71470 and 657, that added together give a palindrome (72127).

The spelling of 71470657 in words is "seventy-one million, four hundred seventy thousand, six hundred fifty-seven".