71487937 has 8 divisors (see below), whose sum is σ = 76671360. Its totient is φ = 66446640.

The previous prime is 71487931. The next prime is 71487961. The reversal of 71487937 is 73978417.

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 71487937 - 2¹⁹ = 70963649 is a prime.

It is a super-2 number, since 2×71487937² = 10221050273031938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71487931) 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, 34489 + ... + 36502.

It is an arithmetic number, because the mean of its divisors is an integer number (9583920).

Almost surely, 2^71487937 is an apocalyptic number.

It is an amenable number.

71487937 is a deficient number, since it is larger than the sum of its proper divisors (5183423).

71487937 is a wasteful number, since it uses less digits than its factorization.

71487937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71063.

The product of its digits is 296352, while the sum is 46.

The square root of 71487937 is about 8455.0539324123. The cubic root of 71487937 is about 415.0281821477.

The spelling of 71487937 in words is "seventy-one million, four hundred eighty-seven thousand, nine hundred thirty-seven".