3129663 has 4 divisors (see below), whose sum is σ = 4172888. Its totient is φ = 2086440.

The previous prime is 3129641. The next prime is 3129677. The reversal of 3129663 is 3669213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3129663 - 2¹⁸ = 2867519 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3129663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129613) 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, 521608 + ... + 521613.

It is an arithmetic number, because the mean of its divisors is an integer number (1043222).

Almost surely, 2^3129663 is an apocalyptic number.

3129663 is a deficient number, since it is larger than the sum of its proper divisors (1043225).

3129663 is a wasteful number, since it uses less digits than its factorization.

3129663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043224.

The product of its digits is 5832, while the sum is 30.

The square root of 3129663 is about 1769.0853569006. The cubic root of 3129663 is about 146.2735691433.

The spelling of 3129663 in words is "three million, one hundred twenty-nine thousand, six hundred sixty-three".