15000649 has 2 divisors, whose sum is σ = 15000650. Its totient is φ = 15000648.

The previous prime is 15000631. The next prime is 15000659. The reversal of 15000649 is 94600051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11778624 + 3222025 = 3432^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 15000649 - 2⁵ = 15000617 is a prime.

It is not a weakly prime, because it can be changed into another prime (15000659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7500324 + 7500325.

It is an arithmetic number, because the mean of its divisors is an integer number (7500325).

Almost surely, 2^15000649 is an apocalyptic number.

It is an amenable number.

15000649 is a deficient number, since it is larger than the sum of its proper divisors (1).

15000649 is an equidigital number, since it uses as much as digits as its factorization.

15000649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 15000649 is about 3873.0671308409. The cubic root of 15000649 is about 246.6247642076.

The spelling of 15000649 in words is "fifteen million, six hundred forty-nine", and thus it is an aban number.