3649907 has 2 divisors, whose sum is σ = 3649908. Its totient is φ = 3649906.

The previous prime is 3649903. The next prime is 3649913. The reversal of 3649907 is 7099463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3649907 - 2² = 3649903 is a prime.

It is a super-2 number, since 2×3649907² = 26643642217298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3649903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1824953 + 1824954.

It is an arithmetic number, because the mean of its divisors is an integer number (1824954).

Almost surely, 2^3649907 is an apocalyptic number.

3649907 is a deficient number, since it is larger than the sum of its proper divisors (1).

3649907 is an equidigital number, since it uses as much as digits as its factorization.

3649907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3649907 is about 1910.4729780868. The cubic root of 3649907 is about 153.9668647437.

It can be divided in two parts, 364990 and 7, that multiplied together give a triangular number (2554930 = T₂₂₆₀).

The spelling of 3649907 in words is "three million, six hundred forty-nine thousand, nine hundred seven".