10156649 has 2 divisors, whose sum is σ = 10156650. Its totient is φ = 10156648.

The previous prime is 10156637. The next prime is 10156651. The reversal of 10156649 is 94665101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 3396649 = 2600^2 + 1843^2 .

It is an emirp because it is prime and its reverse (94665101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10156649 - 2¹⁶ = 10091113 is a prime.

Together with 10156651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10156609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078324 + 5078325.

It is an arithmetic number, because the mean of its divisors is an integer number (5078325).

Almost surely, 2^10156649 is an apocalyptic number.

It is an amenable number.

10156649 is a deficient number, since it is larger than the sum of its proper divisors (1).

10156649 is an equidigital number, since it uses as much as digits as its factorization.

10156649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 10156649 is about 3186.9497956510. The cubic root of 10156649 is about 216.5626122317.

The spelling of 10156649 in words is "ten million, one hundred fifty-six thousand, six hundred forty-nine".