3640332 has 12 divisors (see below), whose sum is σ = 8494136. Its totient is φ = 1213440.

The previous prime is 3640331. The next prime is 3640333. The reversal of 3640332 is 2330463.

It is an interprime number because it is at equal distance from previous prime (3640331) and next prime (3640333).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3640299 and 3640308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640331) 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, 151669 + ... + 151692.

Almost surely, 2^3640332 is an apocalyptic number.

It is an amenable number.

3640332 is an abundant number, since it is smaller than the sum of its proper divisors (4853804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3640332 is a wasteful number, since it uses less digits than its factorization.

3640332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303368 (or 303366 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 3640332 is about 1907.9654084915. The cubic root of 3640332 is about 153.8321102822.

Adding to 3640332 its reverse (2330463), we get a palindrome (5970795).

It can be divided in two parts, 3 and 640332, that multiplied together give a square (1920996 = 1386²).

The spelling of 3640332 in words is "three million, six hundred forty thousand, three hundred thirty-two".