71629049 has 4 divisors (see below), whose sum is σ = 71662836. Its totient is φ = 71595264.

The previous prime is 71629039. The next prime is 71629057. The reversal of 71629049 is 94092617.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25321024 + 46308025 = 5032^2 + 6805^2 .

It is a cyclic number.

It is not a de Polignac number, because 71629049 - 2⁸ = 71628793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71629039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13484 + ... + 18029.

It is an arithmetic number, because the mean of its divisors is an integer number (17915709).

Almost surely, 2^71629049 is an apocalyptic number.

It is an amenable number.

71629049 is a deficient number, since it is larger than the sum of its proper divisors (33787).

71629049 is a wasteful number, since it uses less digits than its factorization.

71629049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33786.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 71629049 is about 8463.3946499026. The cubic root of 71629049 is about 415.3010811702.

The spelling of 71629049 in words is "seventy-one million, six hundred twenty-nine thousand, forty-nine".