64687041 has 12 divisors (see below), whose sum is σ = 94057600. Its totient is φ = 42838200.

The previous prime is 64687037. The next prime is 64687079. The reversal of 64687041 is 14078646.

64687041 is a `hidden beast` number, since 646 + 8 + 7 + 0 + 4 + 1 = 666.

It is not a de Polignac number, because 64687041 - 2² = 64687037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64686987 and 64687005.

It is not an unprimeable number, because it can be changed into a prime (64687741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22441 + ... + 25158.

Almost surely, 2^64687041 is an apocalyptic number.

It is an amenable number.

64687041 is a deficient number, since it is larger than the sum of its proper divisors (29370559).

64687041 is a wasteful number, since it uses less digits than its factorization.

64687041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47756 (or 47753 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 64687041 is about 8042.8254363750. The cubic root of 64687041 is about 401.4262439430.

The spelling of 64687041 in words is "sixty-four million, six hundred eighty-seven thousand, forty-one".