3453640 has 16 divisors (see below), whose sum is σ = 7770780. Its totient is φ = 1381440.

The previous prime is 3453629. The next prime is 3453641. The reversal of 3453640 is 463543.

It can be written as a sum of positive squares in 2 ways, for example, as 3319684 + 133956 = 1822^2 + 366^2 .

It is not an unprimeable number, because it can be changed into a prime (3453641) 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, 43131 + ... + 43210.

Almost surely, 2^3453640 is an apocalyptic number.

It is an amenable number.

3453640 is an abundant number, since it is smaller than the sum of its proper divisors (4317140).

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

3453640 is a wasteful number, since it uses less digits than its factorization.

3453640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86352 (or 86348 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 3453640 is about 1858.3971588441. The cubic root of 3453640 is about 151.1561036407.

The spelling of 3453640 in words is "three million, four hundred fifty-three thousand, six hundred forty".