3645624746 has 4 divisors (see below), whose sum is σ = 5468437122. Its totient is φ = 1822812372.

The previous prime is 3645624743. The next prime is 3645624751. The reversal of 3645624746 is 6474265463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2148786025 + 1496838721 = 46355^2 + 38689^2 .

It is a super-3 number, since 3×3645624746³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3645624746.

It is not an unprimeable number, because it can be changed into a prime (3645624743) 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 as a sum of consecutive naturals, namely, 911406185 + ... + 911406188.

Almost surely, 2^3645624746 is an apocalyptic number.

3645624746 is a deficient number, since it is larger than the sum of its proper divisors (1822812376).

3645624746 is a wasteful number, since it uses less digits than its factorization.

3645624746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822812375.

The product of its digits is 2903040, while the sum is 47.

The square root of 3645624746 is about 60379.0091505318. The cubic root of 3645624746 is about 1539.0662729641.

The spelling of 3645624746 in words is "three billion, six hundred forty-five million, six hundred twenty-four thousand, seven hundred forty-six".