102678761 has 2 divisors, whose sum is σ = 102678762. Its totient is φ = 102678760.

The previous prime is 102678733. The next prime is 102678767. The reversal of 102678761 is 167876201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 47265625 = 7444^2 + 6875^2 .

It is a cyclic number.

It is not a de Polignac number, because 102678761 - 2²² = 98484457 is a prime.

It is not a weakly prime, because it can be changed into another prime (102678767) 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, 51339380 + 51339381.

It is an arithmetic number, because the mean of its divisors is an integer number (51339381).

Almost surely, 2^102678761 is an apocalyptic number.

It is an amenable number.

102678761 is a deficient number, since it is larger than the sum of its proper divisors (1).

102678761 is an equidigital number, since it uses as much as digits as its factorization.

102678761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 102678761 is about 10133.0528963388. The cubic root of 102678761 is about 468.2669858126.

The spelling of 102678761 in words is "one hundred two million, six hundred seventy-eight thousand, seven hundred sixty-one".