120651863 has 2 divisors, whose sum is σ = 120651864. Its totient is φ = 120651862.

The previous prime is 120651847. The next prime is 120651887. The reversal of 120651863 is 368156021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120651863 - 2⁴ = 120651847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120651823) 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, 60325931 + 60325932.

It is an arithmetic number, because the mean of its divisors is an integer number (60325932).

Almost surely, 2^120651863 is an apocalyptic number.

120651863 is a deficient number, since it is larger than the sum of its proper divisors (1).

120651863 is an equidigital number, since it uses as much as digits as its factorization.

120651863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 120651863 is about 10984.1641921450. The cubic root of 120651863 is about 494.1339316248.

The spelling of 120651863 in words is "one hundred twenty million, six hundred fifty-one thousand, eight hundred sixty-three".