71488679 has 4 divisors (see below), whose sum is σ = 72837576. Its totient is φ = 70139784.

The previous prime is 71488667. The next prime is 71488687. The reversal of 71488679 is 97688417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97688417 = 1447 ⋅67511.

It is a cyclic number.

It is not a de Polignac number, because 71488679 - 2⁴ = 71488663 is a prime.

It is a super-2 number, since 2×71488679² = 10221262450330082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71488609) 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, 674369 + ... + 674474.

It is an arithmetic number, because the mean of its divisors is an integer number (18209394).

Almost surely, 2^71488679 is an apocalyptic number.

71488679 is a deficient number, since it is larger than the sum of its proper divisors (1348897).

71488679 is a wasteful number, since it uses less digits than its factorization.

71488679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348896.

The product of its digits is 677376, while the sum is 50.

The square root of 71488679 is about 8455.0978113798. The cubic root of 71488679 is about 415.0296180536.

The spelling of 71488679 in words is "seventy-one million, four hundred eighty-eight thousand, six hundred seventy-nine".