71329077 has 6 divisors (see below), whose sum is σ = 103030902. Its totient is φ = 47552712.

The previous prime is 71329039. The next prime is 71329079. The reversal of 71329077 is 77092317.

It can be written as a sum of positive squares in only one way, i.e., 70711281 + 617796 = 8409^2 + 786^2 .

It is not a de Polignac number, because 71329077 - 2⁷ = 71328949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71329079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3962718 + ... + 3962735.

It is an arithmetic number, because the mean of its divisors is an integer number (17171817).

Almost surely, 2^71329077 is an apocalyptic number.

It is an amenable number.

71329077 is a deficient number, since it is larger than the sum of its proper divisors (31701825).

71329077 is a wasteful number, since it uses less digits than its factorization.

71329077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7925459 (or 7925456 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 71329077 is about 8445.6543263385. The cubic root of 71329077 is about 414.7205298939.

The spelling of 71329077 in words is "seventy-one million, three hundred twenty-nine thousand, seventy-seven".