3640699 has 4 divisors (see below), whose sum is σ = 3644536. Its totient is φ = 3636864.

The previous prime is 3640697. The next prime is 3640711. The reversal of 3640699 is 9960463.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3640699 - 2¹ = 3640697 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (3640697) 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, 667 + ... + 2779.

It is an arithmetic number, because the mean of its divisors is an integer number (911134).

Almost surely, 2^3640699 is an apocalyptic number.

3640699 is a deficient number, since it is larger than the sum of its proper divisors (3837).

3640699 is a wasteful number, since it uses less digits than its factorization.

3640699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 3640699 is about 1908.0615818154. The cubic root of 3640699 is about 153.8372796356.

The spelling of 3640699 in words is "three million, six hundred forty thousand, six hundred ninety-nine".