536677681 has 2 divisors, whose sum is σ = 536677682. Its totient is φ = 536677680.

The previous prime is 536677649. The next prime is 536677717. The reversal of 536677681 is 186776635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433472400 + 103205281 = 20820^2 + 10159^2 .

It is a cyclic number.

It is not a de Polignac number, because 536677681 - 2⁵ = 536677649 is a prime.

It is a super-2 number, since 2×536677681² = 576045866567075522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (536677481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268338840 + 268338841.

It is an arithmetic number, because the mean of its divisors is an integer number (268338841).

Almost surely, 2^536677681 is an apocalyptic number.

It is an amenable number.

536677681 is a deficient number, since it is larger than the sum of its proper divisors (1).

536677681 is an equidigital number, since it uses as much as digits as its factorization.

536677681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 536677681 is about 23166.3048628822. The cubic root of 536677681 is about 812.6518184470.

The spelling of 536677681 in words is "five hundred thirty-six million, six hundred seventy-seven thousand, six hundred eighty-one".