3640461 has 16 divisors (see below), whose sum is σ = 5349888. Its totient is φ = 2183600.

The previous prime is 3640451. The next prime is 3640471. The reversal of 3640461 is 1640463.

It is an interprime number because it is at equal distance from previous prime (3640451) and next prime (3640471).

It is a cyclic number.

It is not a de Polignac number, because 3640461 - 2⁷ = 3640333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3016 + ... + 4046.

It is an arithmetic number, because the mean of its divisors is an integer number (334368).

Almost surely, 2^3640461 is an apocalyptic number.

It is an amenable number.

3640461 is a deficient number, since it is larger than the sum of its proper divisors (1709427).

3640461 is a wasteful number, since it uses less digits than its factorization.

3640461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 3640461 is about 1907.9992138363. Note that the first 3 decimals coincide. The cubic root of 3640461 is about 153.8339273425.

The spelling of 3640461 in words is "three million, six hundred forty thousand, four hundred sixty-one".