3645625403 has 8 divisors (see below), whose sum is σ = 4219169280. Its totient is φ = 3085266600.

The previous prime is 3645625397. The next prime is 3645625421. The reversal of 3645625403 is 3045265463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3645625403 - 2⁸ = 3645625147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645625433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3295673 + ... + 3296778.

It is an arithmetic number, because the mean of its divisors is an integer number (527396160).

Almost surely, 2^3645625403 is an apocalyptic number.

3645625403 is a deficient number, since it is larger than the sum of its proper divisors (573543877).

3645625403 is an equidigital number, since it uses as much as digits as its factorization.

3645625403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592537.

The product of its (nonzero) digits is 259200, while the sum is 38.

The square root of 3645625403 is about 60379.0145911640. The cubic root of 3645625403 is about 1539.0663654189.

The spelling of 3645625403 in words is "three billion, six hundred forty-five million, six hundred twenty-five thousand, four hundred three".