3640670 has 32 divisors (see below), whose sum is σ = 7464960. Its totient is φ = 1265440.

The previous prime is 3640661. The next prime is 3640697. The reversal of 3640670 is 760463.

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1811 + ... + 3249.

It is an arithmetic number, because the mean of its divisors is an integer number (233280).

Almost surely, 2^3640670 is an apocalyptic number.

3640670 is an abundant number, since it is smaller than the sum of its proper divisors (3824290).

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

3640670 is a wasteful number, since it uses less digits than its factorization.

3640670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 3640670 is about 1908.0539824649. The cubic root of 3640670 is about 153.8368711707.

The spelling of 3640670 in words is "three million, six hundred forty thousand, six hundred seventy".