3645700057 has 4 divisors (see below), whose sum is σ = 3645824436. Its totient is φ = 3645575680.

The previous prime is 3645700049. The next prime is 3645700061. The reversal of 3645700057 is 7500075463.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7500075463 = 15017 ⋅499439.

It can be written as a sum of positive squares in 2 ways, for example, as 1526386761 + 2119313296 = 39069^2 + 46036^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645700057 - 2³ = 3645700049 is a prime.

It is a super-2 number, since 2×3645700057² = 26582257811219606498, 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 = 3645699989 and 3645700025.

It is not an unprimeable number, because it can be changed into a prime (3645700087) 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, 8757 + ... + 85837.

It is an arithmetic number, because the mean of its divisors is an integer number (911456109).

Almost surely, 2^3645700057 is an apocalyptic number.

It is an amenable number.

3645700057 is a deficient number, since it is larger than the sum of its proper divisors (124379).

3645700057 is an equidigital number, since it uses as much as digits as its factorization.

3645700057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124378.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 3645700057 is about 60379.6327994797. The cubic root of 3645700057 is about 1539.0768708570.

The spelling of 3645700057 in words is "three billion, six hundred forty-five million, seven hundred thousand, fifty-seven".