12649807 has 2 divisors, whose sum is σ = 12649808. Its totient is φ = 12649806.

The previous prime is 12649789. The next prime is 12649823. The reversal of 12649807 is 70894621.

12649807 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12649807 - 2¹⁵ = 12617039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12649907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324903 + 6324904.

It is an arithmetic number, because the mean of its divisors is an integer number (6324904).

Almost surely, 2^12649807 is an apocalyptic number.

12649807 is a deficient number, since it is larger than the sum of its proper divisors (1).

12649807 is an equidigital number, since it uses as much as digits as its factorization.

12649807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 12649807 is about 3556.6567166371. The cubic root of 12649807 is about 233.0028857545.

It can be divided in two parts, 12649 and 807, that added together give a square (13456 = 116²).

The spelling of 12649807 in words is "twelve million, six hundred forty-nine thousand, eight hundred seven".