64620898695 has 96 divisors (see below), whose sum is σ = 120756467520. Its totient is φ = 31848837120.

The previous prime is 64620898673. The next prime is 64620898703. The reversal of 64620898695 is 59689802646.

64620898695 is a `hidden beast` number, since 6 + 462 + 0 + 8 + 9 + 86 + 95 = 666.

It is not a de Polignac number, because 64620898695 - 2⁸ = 64620898439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40924416 + ... + 40925994.

It is an arithmetic number, because the mean of its divisors is an integer number (1257879870).

Almost surely, 2^64620898695 is an apocalyptic number.

64620898695 is a deficient number, since it is larger than the sum of its proper divisors (56135568825).

64620898695 is a wasteful number, since it uses less digits than its factorization.

64620898695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545 (or 2542 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 64620898695 in words is "sixty-four billion, six hundred twenty million, eight hundred ninety-eight thousand, six hundred ninety-five".