680537153 has 2 divisors, whose sum is σ = 680537154. Its totient is φ = 680537152.

The previous prime is 680537101. The next prime is 680537161. The reversal of 680537153 is 351735086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472975504 + 207561649 = 21748^2 + 14407^2 .

It is a cyclic number.

It is not a de Polignac number, because 680537153 - 2⁸ = 680536897 is a prime.

It is a super-2 number, since 2×680537153² = 926261633226690818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_35296472 and since 680537153 and 35296472 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (680537173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340268576 + 340268577.

It is an arithmetic number, because the mean of its divisors is an integer number (340268577).

Almost surely, 2^680537153 is an apocalyptic number.

It is an amenable number.

680537153 is a deficient number, since it is larger than the sum of its proper divisors (1).

680537153 is an equidigital number, since it uses as much as digits as its factorization.

680537153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 680537153 is about 26087.1070262687. The cubic root of 680537153 is about 879.5974195927.

The spelling of 680537153 in words is "six hundred eighty million, five hundred thirty-seven thousand, one hundred fifty-three".