71879797 has 8 divisors (see below), whose sum is σ = 78514272. Its totient is φ = 65262000.

The previous prime is 71879771. The next prime is 71879803. The reversal of 71879797 is 79797817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71879797 - 2¹⁹ = 71355509 is a prime.

It is a super-2 number, since 2×71879797² = 10333410433522418, 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 (71879737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5922 + ... + 13372.

It is an arithmetic number, because the mean of its divisors is an integer number (9814284).

Almost surely, 2^71879797 is an apocalyptic number.

It is an amenable number.

71879797 is a deficient number, since it is larger than the sum of its proper divisors (6634475).

71879797 is a wasteful number, since it uses less digits than its factorization.

71879797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8339.

The product of its digits is 1555848, while the sum is 55.

The square root of 71879797 is about 8478.1953858118. The cubic root of 71879797 is about 415.7851242522.

The spelling of 71879797 in words is "seventy-one million, eight hundred seventy-nine thousand, seven hundred ninety-seven".