1668687037 has 8 divisors (see below), whose sum is σ = 1768438656. Its totient is φ = 1569112512.

The previous prime is 1668687019. The next prime is 1668687043. The reversal of 1668687037 is 7307868661.

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

It is not a de Polignac number, because 1668687037 - 2¹¹ = 1668684989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668687017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24613 + ... + 62794.

It is an arithmetic number, because the mean of its divisors is an integer number (221054832).

Almost surely, 2^1668687037 is an apocalyptic number.

1668687037 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1668687037 is a deficient number, since it is larger than the sum of its proper divisors (99751619).

1668687037 is a wasteful number, since it uses less digits than its factorization.

1668687037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88547.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 1668687037 is about 40849.5659340463. The cubic root of 1668687037 is about 1186.1099908228.

The spelling of 1668687037 in words is "one billion, six hundred sixty-eight million, six hundred eighty-seven thousand, thirty-seven".