71654071 has 2 divisors, whose sum is σ = 71654072. Its totient is φ = 71654070.

The previous prime is 71654059. The next prime is 71654081. The reversal of 71654071 is 17045617.

It is a strong prime.

It is an emirp because it is prime and its reverse (17045617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71654071 - 2⁹ = 71653559 is a prime.

It is a super-4 number, since 4×71654071⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71654081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35827035 + 35827036.

It is an arithmetic number, because the mean of its divisors is an integer number (35827036).

Almost surely, 2^71654071 is an apocalyptic number.

71654071 is a deficient number, since it is larger than the sum of its proper divisors (1).

71654071 is an equidigital number, since it uses as much as digits as its factorization.

71654071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 71654071 is about 8464.8727692742. The cubic root of 71654071 is about 415.3494342430.

Adding to 71654071 its reverse (17045617), we get a palindrome (88699688).

It can be divided in two parts, 7165 and 4071, that added together give a square (11236 = 106²).

The spelling of 71654071 in words is "seventy-one million, six hundred fifty-four thousand, seventy-one".