1401046664 has 16 divisors (see below), whose sum is σ = 2640300300. Its totient is φ = 696966592.

The previous prime is 1401046663. The next prime is 1401046709. The reversal of 1401046664 is 4666401041.

It can be written as a sum of positive squares in 2 ways, for example, as 1398012100 + 3034564 = 37390^2 + 1742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1401046664.

It is not an unprimeable number, because it can be changed into a prime (1401046663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442919 + ... + 446070.

Almost surely, 2^1401046664 is an apocalyptic number.

It is an amenable number.

1401046664 is a deficient number, since it is larger than the sum of its proper divisors (1239253636).

1401046664 is a wasteful number, since it uses less digits than its factorization.

1401046664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889192 (or 889188 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1401046664 is about 37430.5578905792. The cubic root of 1401046664 is about 1118.9676563126.

The spelling of 1401046664 in words is "one billion, four hundred one million, forty-six thousand, six hundred sixty-four".