71078245 has 16 divisors (see below), whose sum is σ = 98448768. Its totient is φ = 48254400.

The previous prime is 71078239. The next prime is 71078251. The reversal of 71078245 is 54287017.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71078239) and next prime (71078251).

It is not a de Polignac number, because 71078245 - 2¹⁵ = 71045477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71078245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6519 + ... + 13588.

It is an arithmetic number, because the mean of its divisors is an integer number (6153048).

Almost surely, 2^71078245 is an apocalyptic number.

It is an amenable number.

71078245 is a deficient number, since it is larger than the sum of its proper divisors (27370523).

71078245 is a wasteful number, since it uses less digits than its factorization.

71078245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20220.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 71078245 is about 8430.7914812312. The cubic root of 71078245 is about 414.2338309694.

The spelling of 71078245 in words is "seventy-one million, seventy-eight thousand, two hundred forty-five".