3646931 has 2 divisors, whose sum is σ = 3646932. Its totient is φ = 3646930.

The previous prime is 3646927. The next prime is 3646957. The reversal of 3646931 is 1396463.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3646931 - 2² = 3646927 is a prime.

It is a super-2 number, since 2×3646931² = 26600211437522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p₂₅₉₈₈₀ and since 3646931 and 259880 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3646961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823465 + 1823466.

It is an arithmetic number, because the mean of its divisors is an integer number (1823466).

Almost surely, 2^3646931 is an apocalyptic number.

3646931 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646931 is an equidigital number, since it uses as much as digits as its factorization.

3646931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 3646931 is about 1909.6939545383. The cubic root of 3646931 is about 153.9250070580.

The spelling of 3646931 in words is "three million, six hundred forty-six thousand, nine hundred thirty-one".