662734702664 has 8 divisors (see below), whose sum is σ = 1242627567510. Its totient is φ = 331367351328.

The previous prime is 662734702639. The next prime is 662734702673. The reversal of 662734702664 is 466207437266.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 653850132100 + 8884570564 = 808610^2 + 94258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×662734702664² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41420918909 + ... + 41420918924.

Almost surely, 2^662734702664 is an apocalyptic number.

It is an amenable number.

662734702664 is a deficient number, since it is larger than the sum of its proper divisors (579892864846).

662734702664 is a wasteful number, since it uses less digits than its factorization.

662734702664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82841837839 (or 82841837835 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 53.

The spelling of 662734702664 in words is "six hundred sixty-two billion, seven hundred thirty-four million, seven hundred two thousand, six hundred sixty-four".