10618649 has 2 divisors, whose sum is σ = 10618650. Its totient is φ = 10618648.

The previous prime is 10618639. The next prime is 10618651. The reversal of 10618649 is 94681601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6538249 + 4080400 = 2557^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 10618649 - 2⁴ = 10618633 is a prime.

It is a super-2 number, since 2×10618649² = 225511413170402, which contains 22 as substring.

Together with 10618651, 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 (10618639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5309324 + 5309325.

It is an arithmetic number, because the mean of its divisors is an integer number (5309325).

Almost surely, 2^10618649 is an apocalyptic number.

It is an amenable number.

10618649 is a deficient number, since it is larger than the sum of its proper divisors (1).

10618649 is an equidigital number, since it uses as much as digits as its factorization.

10618649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 10618649 is about 3258.6268580493. The cubic root of 10618649 is about 219.7976721084.

The spelling of 10618649 in words is "ten million, six hundred eighteen thousand, six hundred forty-nine".