867246649 has 2 divisors, whose sum is σ = 867246650. Its totient is φ = 867246648.

The previous prime is 867246631. The next prime is 867246691. The reversal of 867246649 is 946642768.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 836366400 + 30880249 = 28920^2 + 5557^2 .

It is a cyclic number.

It is not a de Polignac number, because 867246649 - 2⁵ = 867246617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 867246596 and 867246605.

It is not a weakly prime, because it can be changed into another prime (867246629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433623324 + 433623325.

It is an arithmetic number, because the mean of its divisors is an integer number (433623325).

Almost surely, 2^867246649 is an apocalyptic number.

It is an amenable number.

867246649 is a deficient number, since it is larger than the sum of its proper divisors (1).

867246649 is an equidigital number, since it uses as much as digits as its factorization.

867246649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 52.

The square root of 867246649 is about 29449.0517504384. The cubic root of 867246649 is about 953.6321339802.

The spelling of 867246649 in words is "eight hundred sixty-seven million, two hundred forty-six thousand, six hundred forty-nine".