3636731 has 6 divisors (see below), whose sum is σ = 4230540. Its totient is φ = 3117156.

The previous prime is 3636709. The next prime is 3636757. The reversal of 3636731 is 1376363.

It is not a de Polignac number, because 3636731 - 2⁶ = 3636667 is a prime.

It is a super-2 number, since 2×3636731² = 26451624732722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3636694 and 3636703.

It is not an unprimeable number, because it can be changed into a prime (3636781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37061 + ... + 37158.

It is an arithmetic number, because the mean of its divisors is an integer number (705090).

Almost surely, 2^3636731 is an apocalyptic number.

3636731 is a deficient number, since it is larger than the sum of its proper divisors (593809).

3636731 is an equidigital number, since it uses as much as digits as its factorization.

3636731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74233 (or 74226 counting only the distinct ones).

The product of its digits is 6804, while the sum is 29.

The square root of 3636731 is about 1907.0214996166. The cubic root of 3636731 is about 153.7813702046.

The spelling of 3636731 in words is "three million, six hundred thirty-six thousand, seven hundred thirty-one".