1675808657 has 4 divisors (see below), whose sum is σ = 1676559360. Its totient is φ = 1675057956.

The previous prime is 1675808639. The next prime is 1675808689. The reversal of 1675808657 is 7568085761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7568085761 = 23 ⋅329047207.

It is a cyclic number.

It is not a de Polignac number, because 1675808657 - 2¹⁰ = 1675807633 is a prime.

It is a super-2 number, since 2×1675808657² = 5616669309752287298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1675808599 and 1675808608.

It is not an unprimeable number, because it can be changed into a prime (1675808627) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 371993 + ... + 376470.

It is an arithmetic number, because the mean of its divisors is an integer number (419139840).

Almost surely, 2^1675808657 is an apocalyptic number.

It is an amenable number.

1675808657 is a deficient number, since it is larger than the sum of its proper divisors (750703).

1675808657 is an equidigital number, since it uses as much as digits as its factorization.

1675808657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750702.

The product of its (nonzero) digits is 2822400, while the sum is 53.

The square root of 1675808657 is about 40936.6419849015. The cubic root of 1675808657 is about 1187.7949555333.

The spelling of 1675808657 in words is "one billion, six hundred seventy-five million, eight hundred eight thousand, six hundred fifty-seven".