71442677 has 2 divisors, whose sum is σ = 71442678. Its totient is φ = 71442676.

The previous prime is 71442667. The next prime is 71442697. The reversal of 71442677 is 77624417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40462321 + 30980356 = 6361^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 71442677 - 2⁴ = 71442661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71442677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71442667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35721338 + 35721339.

It is an arithmetic number, because the mean of its divisors is an integer number (35721339).

Almost surely, 2^71442677 is an apocalyptic number.

It is an amenable number.

71442677 is a deficient number, since it is larger than the sum of its proper divisors (1).

71442677 is an equidigital number, since it uses as much as digits as its factorization.

71442677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856, while the sum is 38.

The square root of 71442677 is about 8452.3770029501. The cubic root of 71442677 is about 414.9405769662.

The spelling of 71442677 in words is "seventy-one million, four hundred forty-two thousand, six hundred seventy-seven".