64665356087 has 8 divisors (see below), whose sum is σ = 66245902800. Its totient is φ = 63084968640.

The previous prime is 64665356059. The next prime is 64665356117. The reversal of 64665356087 is 78065356646.

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 64665356087 - 2⁸ = 64665355831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64665356047) 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, 1505789 + ... + 1548137.

It is an arithmetic number, because the mean of its divisors is an integer number (8280737850).

Almost surely, 2^64665356087 is an apocalyptic number.

64665356087 is a deficient number, since it is larger than the sum of its proper divisors (1580546713).

64665356087 is a wasteful number, since it uses less digits than its factorization.

64665356087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79633.

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 64665356087 in words is "sixty-four billion, six hundred sixty-five million, three hundred fifty-six thousand, eighty-seven".