1668707534 has 8 divisors (see below), whose sum is σ = 2695604520. Its totient is φ = 770172696.

The previous prime is 1668707507. The next prime is 1668707543. The reversal of 1668707534 is 4357078661.

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

It is a super-2 number, since 2×1668707534² = 5569169668056722312, which 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, 32090504 + ... + 32090555.

It is an arithmetic number, because the mean of its divisors is an integer number (336950565).

Almost surely, 2^1668707534 is an apocalyptic number.

1668707534 is a deficient number, since it is larger than the sum of its proper divisors (1026896986).

1668707534 is a wasteful number, since it uses less digits than its factorization.

1668707534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64181074.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 1668707534 is about 40849.8168172147. The cubic root of 1668707534 is about 1186.1148472551.

The spelling of 1668707534 in words is "one billion, six hundred sixty-eight million, seven hundred seven thousand, five hundred thirty-four".