64676067646 has 8 divisors (see below), whose sum is σ = 97574877144. Its totient is φ = 32151108600.

The previous prime is 64676067623. The next prime is 64676067667.

64676067646 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×64676067646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93462180 + ... + 93462871.

It is an arithmetic number, because the mean of its divisors is an integer number (12196859643).

Almost surely, 2^64676067646 is an apocalyptic number.

64676067646 is a deficient number, since it is larger than the sum of its proper divisors (32898809498).

64676067646 is a wasteful number, since it uses less digits than its factorization.

64676067646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186925226.

The product of its (nonzero) digits is 36578304, while the sum is 58.

The spelling of 64676067646 in words is "sixty-four billion, six hundred seventy-six million, sixty-seven thousand, six hundred forty-six".