3630729 has 8 divisors (see below), whose sum is σ = 5095840. Its totient is φ = 2293056.

The previous prime is 3630709. The next prime is 3630733. The reversal of 3630729 is 9270363.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3630729 - 2¹³ = 3622537 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3630696 and 3630705.

It is not an unprimeable number, because it can be changed into a prime (3630709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31792 + ... + 31905.

It is an arithmetic number, because the mean of its divisors is an integer number (636980).

Almost surely, 2^3630729 is an apocalyptic number.

It is an amenable number.

3630729 is a deficient number, since it is larger than the sum of its proper divisors (1465111).

3630729 is a wasteful number, since it uses less digits than its factorization.

3630729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63719.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 3630729 is about 1905.4471916062. The cubic root of 3630729 is about 153.6967242212.

The spelling of 3630729 in words is "three million, six hundred thirty thousand, seven hundred twenty-nine".