1604677655 has 16 divisors (see below), whose sum is σ = 2251881984. Its totient is φ = 1074759840.

The previous prime is 1604677621. The next prime is 1604677663. The reversal of 1604677655 is 5567764061.

It is not a de Polignac number, because 1604677655 - 2¹⁴ = 1604661271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 531611 + ... + 534620.

It is an arithmetic number, because the mean of its divisors is an integer number (140742624).

Almost surely, 2^1604677655 is an apocalyptic number.

1604677655 is a deficient number, since it is larger than the sum of its proper divisors (647204329).

1604677655 is a wasteful number, since it uses less digits than its factorization.

1604677655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066286.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The square root of 1604677655 is about 40058.4280145889. The cubic root of 1604677655 is about 1170.7457818580.

The spelling of 1604677655 in words is "one billion, six hundred four million, six hundred seventy-seven thousand, six hundred fifty-five".