64590697610 has 16 divisors (see below), whose sum is σ = 119405506536. Its totient is φ = 25138001088.

The previous prime is 64590697603. The next prime is 64590697649. The reversal of 64590697610 is 1679609546.

It is a Cunningham number, because it is equal to 254147²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 57796487281 + 6794210329 = 240409^2 + 82427^2 .

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 7 ways as a sum of consecutive naturals, for example, 87284357 + ... + 87285096.

Almost surely, 2^64590697610 is an apocalyptic number.

64590697610 is a deficient number, since it is larger than the sum of its proper divisors (54814808926).

64590697610 is a wasteful number, since it uses less digits than its factorization.

64590697610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174569497.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 64590697610 in words is "sixty-four billion, five hundred ninety million, six hundred ninety-seven thousand, six hundred ten".