612832681 has 2 divisors, whose sum is σ = 612832682. Its totient is φ = 612832680.

The previous prime is 612832667. The next prime is 612832687. The reversal of 612832681 is 186238216.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 602211600 + 10621081 = 24540^2 + 3259^2 .

It is a cyclic number.

It is not a de Polignac number, because 612832681 - 2¹⁹ = 612308393 is a prime.

It is a super-2 number, since 2×612832681² = 751127789803295522, which contains 22 as substring.

It is equal to p_31959451 and since 612832681 and 31959451 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612832681.

It is not a weakly prime, because it can be changed into another prime (612832687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306416340 + 306416341.

It is an arithmetic number, because the mean of its divisors is an integer number (306416341).

Almost surely, 2^612832681 is an apocalyptic number.

It is an amenable number.

612832681 is a deficient number, since it is larger than the sum of its proper divisors (1).

612832681 is an equidigital number, since it uses as much as digits as its factorization.

612832681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 612832681 is about 24755.4576002949. The cubic root of 612832681 is about 849.4033556872.

It can be divided in two parts, 6128 and 32681, that added together give a square (38809 = 197²).

The spelling of 612832681 in words is "six hundred twelve million, eight hundred thirty-two thousand, six hundred eighty-one".