1634662664 has 24 divisors (see below), whose sum is σ = 3150090090. Its totient is φ = 795235968.

The previous prime is 1634662651. The next prime is 1634662699. The reversal of 1634662664 is 4662664361.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1502182564 + 132480100 = 38758^2 + 11510^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63677 + ... + 85580.

Almost surely, 2^1634662664 is an apocalyptic number.

It is an amenable number.

1634662664 is a deficient number, since it is larger than the sum of its proper divisors (1515427426).

1634662664 is a wasteful number, since it uses less digits than its factorization.

1634662664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149337 (or 149296 counting only the distinct ones).

The product of its digits is 746496, while the sum is 44.

The square root of 1634662664 is about 40430.9617001624. The cubic root of 1634662664 is about 1177.9930127770.

It can be divided in two parts, 163466 and 2664, that multiplied together give a square (435473424 = 20868²).

The spelling of 1634662664 in words is "one billion, six hundred thirty-four million, six hundred sixty-two thousand, six hundred sixty-four".