13649967 has 6 divisors (see below), whose sum is σ = 19716632. Its totient is φ = 9099972.

The previous prime is 13649959. The next prime is 13649969. The reversal of 13649967 is 76994631.

It is not a de Polignac number, because 13649967 - 2³ = 13649959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13649969) 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, 758323 + ... + 758340.

Almost surely, 2^13649967 is an apocalyptic number.

13649967 is a deficient number, since it is larger than the sum of its proper divisors (6066665).

13649967 is a wasteful number, since it uses less digits than its factorization.

13649967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516669 (or 1516666 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 13649967 is about 3694.5861743908. The cubic root of 13649967 is about 238.9886084333.

The spelling of 13649967 in words is "thirteen million, six hundred forty-nine thousand, nine hundred sixty-seven".