64867641 has 8 divisors (see below), whose sum is σ = 86527584. Its totient is φ = 43226400.

The previous prime is 64867639. The next prime is 64867651. The reversal of 64867641 is 14676846.

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

It is not a de Polignac number, because 64867641 - 2¹ = 64867639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64867593 and 64867602.

It is not an unprimeable number, because it can be changed into a prime (64867651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10030 + ... + 15176.

It is an arithmetic number, because the mean of its divisors is an integer number (10815948).

Almost surely, 2^64867641 is an apocalyptic number.

It is an amenable number.

64867641 is a deficient number, since it is larger than the sum of its proper divisors (21659943).

64867641 is a wasteful number, since it uses less digits than its factorization.

64867641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9351.

The product of its digits is 193536, while the sum is 42.

The square root of 64867641 is about 8054.0450085656. The cubic root of 64867641 is about 401.7994779748.

The spelling of 64867641 in words is "sixty-four million, eight hundred sixty-seven thousand, six hundred forty-one".