71386961 has 8 divisors (see below), whose sum is σ = 75769344. Its totient is φ = 67024960.

The previous prime is 71386957. The next prime is 71386967. The reversal of 71386961 is 16968317.

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 71386961 - 2² = 71386957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71386967) 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, 2456 + ... + 12198.

It is an arithmetic number, because the mean of its divisors is an integer number (9471168).

Almost surely, 2^71386961 is an apocalyptic number.

It is an amenable number.

71386961 is a deficient number, since it is larger than the sum of its proper divisors (4382383).

71386961 is a wasteful number, since it uses less digits than its factorization.

71386961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191.

The product of its digits is 54432, while the sum is 41.

The square root of 71386961 is about 8449.0804825141. The cubic root of 71386961 is about 414.8326823451.

The spelling of 71386961 in words is "seventy-one million, three hundred eighty-six thousand, nine hundred sixty-one".