1606697328 has 40 divisors (see below), whose sum is σ = 4171728528. Its totient is φ = 532844032.

The previous prime is 1606697321. The next prime is 1606697333. The reversal of 1606697328 is 8237966061.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606697321) 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, 75501 + ... + 94412.

Almost surely, 2^1606697328 is an apocalyptic number.

It is an amenable number.

1606697328 is an abundant number, since it is smaller than the sum of its proper divisors (2565031200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606697328 is a wasteful number, since it uses less digits than its factorization.

1606697328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170121 (or 170115 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 1606697328 is about 40083.6291770094. The cubic root of 1606697328 is about 1171.2367490671.

The spelling of 1606697328 in words is "one billion, six hundred six million, six hundred ninety-seven thousand, three hundred twenty-eight".