686555153 has 2 divisors, whose sum is σ = 686555154. Its totient is φ = 686555152.

The previous prime is 686555147. The next prime is 686555159. The reversal of 686555153 is 351555686.

It is a balanced prime because it is at equal distance from previous prime (686555147) and next prime (686555159).

It can be written as a sum of positive squares in only one way, i.e., 609694864 + 76860289 = 24692^2 + 8767^2 .

It is a cyclic number.

It is not a de Polignac number, because 686555153 - 2²⁴ = 669777937 is a prime.

It is a super-2 number, since 2×686555153² = 942715956221706818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (686555159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343277576 + 343277577.

It is an arithmetic number, because the mean of its divisors is an integer number (343277577).

Almost surely, 2^686555153 is an apocalyptic number.

It is an amenable number.

686555153 is a deficient number, since it is larger than the sum of its proper divisors (1).

686555153 is an equidigital number, since it uses as much as digits as its factorization.

686555153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 44.

The square root of 686555153 is about 26202.1974841806. The cubic root of 686555153 is about 882.1825785851.

The spelling of 686555153 in words is "six hundred eighty-six million, five hundred fifty-five thousand, one hundred fifty-three".