1666614416 has 10 divisors (see below), whose sum is σ = 3229065462. Its totient is φ = 833307200.

The previous prime is 1666614413. The next prime is 1666614457. The reversal of 1666614416 is 6144166661.

It can be written as a sum of positive squares in only one way, i.e., 1520688016 + 145926400 = 38996^2 + 12080^2 .

It is a super-2 number, since 2×1666614416² = 5555207223238042112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1666614413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52081685 + ... + 52081716.

Almost surely, 2^1666614416 is an apocalyptic number.

1666614416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1666614416 is a deficient number, since it is larger than the sum of its proper divisors (1562451046).

1666614416 is a wasteful number, since it uses less digits than its factorization.

1666614416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104163409 (or 104163403 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 1666614416 is about 40824.1891040104. The cubic root of 1666614416 is about 1185.6187113641.

The spelling of 1666614416 in words is "one billion, six hundred sixty-six million, six hundred fourteen thousand, four hundred sixteen".