1606667678 has 16 divisors (see below), whose sum is σ = 3004677504. Its totient is φ = 625974360.

The previous prime is 1606667617. The next prime is 1606667681. The reversal of 1606667678 is 8767666061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5216300 + ... + 5216607.

It is an arithmetic number, because the mean of its divisors is an integer number (187792344).

Almost surely, 2^1606667678 is an apocalyptic number.

1606667678 is a deficient number, since it is larger than the sum of its proper divisors (1398009826).

1606667678 is a wasteful number, since it uses less digits than its factorization.

1606667678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10432927.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The square root of 1606667678 is about 40083.2593235630. The cubic root of 1606667678 is about 1171.2295443533.

The spelling of 1606667678 in words is "one billion, six hundred six million, six hundred sixty-seven thousand, six hundred seventy-eight".