1666675351 has 8 divisors (see below), whose sum is σ = 1876843008. Its totient is φ = 1466283000.

The previous prime is 1666675277. The next prime is 1666675433. The reversal of 1666675351 is 1535766661.

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

It is a cyclic number.

It is not a de Polignac number, because 1666675351 - 2²⁷ = 1532457623 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 (1666675951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2443465 + ... + 2444146.

It is an arithmetic number, because the mean of its divisors is an integer number (234605376).

Almost surely, 2^1666675351 is an apocalyptic number.

1666675351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1666675351 is a deficient number, since it is larger than the sum of its proper divisors (210167657).

1666675351 is a wasteful number, since it uses less digits than its factorization.

1666675351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887653.

The product of its digits is 680400, while the sum is 46.

The square root of 1666675351 is about 40824.9354071749. The cubic root of 1666675351 is about 1185.6331607763.

The spelling of 1666675351 in words is "one billion, six hundred sixty-six million, six hundred seventy-five thousand, three hundred fifty-one".