4567645 has 24 divisors (see below), whose sum is σ = 6078600. Its totient is φ = 3290112.

The previous prime is 4567637. The next prime is 4567649. The reversal of 4567645 is 5467654.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 13689 + 4553956 = 117^2 + 2134^2 .

It is not a de Polignac number, because 4567645 - 2³ = 4567637 is a prime.

Its product of digits (100800) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4567649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41851 + ... + 41959.

It is an arithmetic number, because the mean of its divisors is an integer number (253275).

Almost surely, 2^4567645 is an apocalyptic number.

It is an amenable number.

4567645 is a deficient number, since it is larger than the sum of its proper divisors (1510955).

4567645 is a wasteful number, since it uses less digits than its factorization.

4567645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 160 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 4567645 is about 2137.2049503967. The cubic root of 4567645 is about 165.9195066276.

Subtracting 4567645 from its reverse (5467654), we obtain a palindrome (900009).

It can be divided in two parts, 456 and 7645, that multiplied together give a triangular number (3486120 = T₂₆₄₀).

The spelling of 4567645 in words is "four million, five hundred sixty-seven thousand, six hundred forty-five".