3645472 has 12 divisors (see below), whose sum is σ = 7177086. Its totient is φ = 1822720.

The previous prime is 3645469. The next prime is 3645527. The reversal of 3645472 is 2745463.

It can be written as a sum of positive squares in only one way, i.e., 3370896 + 274576 = 1836^2 + 524^2 .

It is a super-2 number, since 2×3645472² = 26578932205568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56929 + ... + 56992.

Almost surely, 2^3645472 is an apocalyptic number.

3645472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3645472 is a deficient number, since it is larger than the sum of its proper divisors (3531614).

3645472 is a wasteful number, since it uses less digits than its factorization.

3645472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113931 (or 113923 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 3645472 is about 1909.3119179432. The cubic root of 3645472 is about 153.9044777837.

Subtracting from 3645472 its reverse (2745463), we obtain a palindrome (900009).

The spelling of 3645472 in words is "three million, six hundred forty-five thousand, four hundred seventy-two".