71220007 has 2 divisors, whose sum is σ = 71220008. Its totient is φ = 71220006.

The previous prime is 71219977. The next prime is 71220013. The reversal of 71220007 is 70002217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71220007 - 2¹⁵ = 71187239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71220047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35610003 + 35610004.

It is an arithmetic number, because the mean of its divisors is an integer number (35610004).

Almost surely, 2^71220007 is an apocalyptic number.

71220007 is a deficient number, since it is larger than the sum of its proper divisors (1).

71220007 is an equidigital number, since it uses as much as digits as its factorization.

71220007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 71220007 is about 8439.1946890684. The cubic root of 71220007 is about 414.5090376320.

The spelling of 71220007 in words is "seventy-one million, two hundred twenty thousand, seven".