120651613 has 2 divisors, whose sum is σ = 120651614. Its totient is φ = 120651612.

The previous prime is 120651599. The next prime is 120651631. The reversal of 120651613 is 316156021.

Together with next prime (120651631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78375609 + 42276004 = 8853^2 + 6502^2 .

It is a cyclic number.

It is not a de Polignac number, because 120651613 - 2¹⁷ = 120520541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120651313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60325806 + 60325807.

It is an arithmetic number, because the mean of its divisors is an integer number (60325807).

Almost surely, 2^120651613 is an apocalyptic number.

It is an amenable number.

120651613 is a deficient number, since it is larger than the sum of its proper divisors (1).

120651613 is an equidigital number, since it uses as much as digits as its factorization.

120651613 is an evil number, because the sum of its binary digits is even.

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

The square root of 120651613 is about 10984.1528121198. The cubic root of 120651613 is about 494.1335903300.

The spelling of 120651613 in words is "one hundred twenty million, six hundred fifty-one thousand, six hundred thirteen".