71739001 has 4 divisors (see below), whose sum is σ = 74858112. Its totient is φ = 68619892.

The previous prime is 71738983. The next prime is 71739013. The reversal of 71739001 is 10093717.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71739001 - 2¹⁵ = 71706233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71739601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559521 + ... + 1559566.

It is an arithmetic number, because the mean of its divisors is an integer number (18714528).

Almost surely, 2^71739001 is an apocalyptic number.

It is an amenable number.

71739001 is a deficient number, since it is larger than the sum of its proper divisors (3119111).

71739001 is a wasteful number, since it uses less digits than its factorization.

71739001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119110.

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 71739001 is about 8469.8878977233. The cubic root of 71739001 is about 415.5134709776.

The spelling of 71739001 in words is "seventy-one million, seven hundred thirty-nine thousand, one".