1604627713 has 4 divisors (see below), whose sum is σ = 1728060628. Its totient is φ = 1481194800.

The previous prime is 1604627711. The next prime is 1604627743. The reversal of 1604627713 is 3177264061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3177264061 = 47 ⋅67601363.

It can be written as a sum of positive squares in 2 ways, for example, as 122146704 + 1482481009 = 11052^2 + 38503^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604627713 - 2¹ = 1604627711 is a prime.

It is a super-2 number, since 2×1604627713² = 5149660194655220738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604627711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61716438 + ... + 61716463.

It is an arithmetic number, because the mean of its divisors is an integer number (432015157).

Almost surely, 2^1604627713 is an apocalyptic number.

1604627713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1604627713 is a deficient number, since it is larger than the sum of its proper divisors (123432915).

1604627713 is a wasteful number, since it uses less digits than its factorization.

1604627713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123432914.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 1604627713 is about 40057.8046452873. The cubic root of 1604627713 is about 1170.7336361181.

The spelling of 1604627713 in words is "one billion, six hundred four million, six hundred twenty-seven thousand, seven hundred thirteen".